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Overview + +Integrate the TypeScript sandbox (`code-mode/`) into the mini-agent actor architecture, leveraging OpenTUI's syntax-highlighted Code component for TUI rendering. + +## Current State + +### Code Mode (Standalone) +- Location: `src/code-mode/` +- Pipeline: TypeScript → type-check → transpile → validate → execute +- Services: `TypeChecker`, `Transpiler`, `Validator`, `Executor` +- Security: static analysis blocks imports, eval, constructor chains, etc. +- API: `CodeMode.run(typescript, ctx, config)` returns `ExecutionResult` + +### Actor Architecture (Main) +- Events flow through `MiniAgent` actors +- `ContextEvent` union defines all event types +- `feedReducer` in OpenTUI chat maps events to UI items +- `ChatUI` service orchestrates TUI interaction + +### OpenTUI Capabilities +- `SyntaxStyle` class for syntax highlighting +- Tree-Sitter integration for language parsing +- **Code Renderable** component for syntax-highlighted source code +- Flexbox layout, scrolling, mouse/keyboard input + +## Integration Design + +### 1. New Event Types + +Add to `src/domain.ts`: + +```typescript +// Code editing events +class CodeBlockStartEvent extends Schema.TaggedClass()( + "CodeBlockStartEvent", + { ...BaseEventFields, language: Schema.String, initialCode: Schema.String } +) + +class CodeBlockUpdateEvent extends Schema.TaggedClass()( + "CodeBlockUpdateEvent", + { ...BaseEventFields, code: Schema.String } +) + +class CodeBlockEndEvent extends Schema.TaggedClass()( + "CodeBlockEndEvent", + { ...BaseEventFields, finalCode: Schema.String } +) + +// Execution events +class CodeExecutionStartedEvent extends Schema.TaggedClass()( + "CodeExecutionStartedEvent", + { ...BaseEventFields, codeHash: Schema.String } +) + +class CodeExecutionResultEvent extends Schema.TaggedClass()( + "CodeExecutionResultEvent", + { + ...BaseEventFields, + codeHash: Schema.String, + success: Schema.Boolean, + result: Schema.optionalWith(Schema.Unknown, { as: "Option" }), + error: Schema.optionalWith(Schema.String, { as: "Option" }), + durationMs: Schema.Number + } +) + +// Type checking events (optional, for real-time feedback) +class TypeCheckResultEvent extends Schema.TaggedClass()( + "TypeCheckResultEvent", + { + ...BaseEventFields, + codeHash: Schema.String, + success: Schema.Boolean, + diagnostics: Schema.Array(Schema.Struct({ + line: Schema.Number, + column: Schema.Number, + message: Schema.String, + severity: Schema.Literal("error", "warning") + })) + } +) +``` + +### 2. OpenTUI Code Component + +Create `src/cli/components/code-block.tsx`: + +```tsx +import { SyntaxStyle, RGBA } from "@opentui/core" +import { memo } from "react" + +const typescriptSyntaxStyle = SyntaxStyle.fromStyles({ + keyword: { fg: RGBA.fromHex("#C792EA") }, // purple + string: { fg: RGBA.fromHex("#C3E88D") }, // green + number: { fg: RGBA.fromHex("#F78C6C") }, // orange + comment: { fg: RGBA.fromHex("#676E95") }, // gray + function: { fg: RGBA.fromHex("#82AAFF") }, // blue + type: { fg: RGBA.fromHex("#FFCB6B") }, // yellow + variable: { fg: RGBA.fromHex("#A6ACCD") }, // light gray + default: { fg: RGBA.fromHex("#EEFFFF") }, // white +}) + +interface CodeBlockProps { + code: string + language: "typescript" | "javascript" + diagnostics?: Array<{ line: number; message: string; severity: "error" | "warning" }> + showLineNumbers?: boolean + status?: "editing" | "executing" | "complete" | "error" +} + +export const CodeBlock = memo(({ + code, + language, + diagnostics = [], + showLineNumbers = true, + status = "complete" +}) => { + // Tree-sitter parsing + syntax highlighting + // Line gutter with diagnostics markers + // Status indicator (spinner for executing) + + return ( + + + {language} + + {status === "executing" && ⏳ Running...} + {status === "error" && ✗ Error} + {status === "complete" && ✓ Done} + + + ({ + line: d.line, + sign: d.severity === "error" ? "!" : "?", + color: d.severity === "error" ? "#FF5555" : "#FFCB6B" + }))} + > + {code} + + + {diagnostics.length > 0 && ( + + {diagnostics.map((d, i) => ( + + L{d.line}: {d.message} + + ))} + + )} + + ) +}) +``` + +### 3. Feed Reducer Extension + +Update `feedReducer` in `opentui-chat.tsx` to handle code events: + +```typescript +// New FeedItem types +class CodeBlockItem extends Schema.TaggedClass()("CodeBlockItem", { + id: Schema.String, + code: Schema.String, + language: Schema.String, + status: Schema.Literal("editing", "executing", "complete", "error"), + result: Schema.optionalWith(Schema.Unknown, { as: "Option" }), + error: Schema.optionalWith(Schema.String, { as: "Option" }), + diagnostics: Schema.Array(Schema.Struct({ + line: Schema.Number, + message: Schema.String, + severity: Schema.Literal("error", "warning") + })), + ...TimestampFields +}) + +// In feedReducer switch: +case "CodeBlockStartEvent": + return [...items, new CodeBlockItem({ + id: crypto.randomUUID(), + code: event.initialCode, + language: event.language, + status: "editing", + result: Option.none(), + error: Option.none(), + diagnostics: [], + ...timestampFields + })] + +case "CodeBlockUpdateEvent": + // Update existing code block + return items.map(item => + item._tag === "CodeBlockItem" && item.status === "editing" + ? new CodeBlockItem({ ...item, code: event.code }) + : item + ) + +case "CodeExecutionStartedEvent": + return items.map(item => + item._tag === "CodeBlockItem" && item.status === "editing" + ? new CodeBlockItem({ ...item, status: "executing" }) + : item + ) + +case "CodeExecutionResultEvent": + return items.map(item => + item._tag === "CodeBlockItem" && item.status === "executing" + ? new CodeBlockItem({ + ...item, + status: event.success ? "complete" : "error", + result: event.result, + error: event.error + }) + : item + ) + +case "TypeCheckResultEvent": + return items.map(item => + item._tag === "CodeBlockItem" + ? new CodeBlockItem({ ...item, diagnostics: event.diagnostics }) + : item + ) +``` + +### 4. Code Execution Service + +Create `src/code-execution.ts`: + +```typescript +import { Effect, Layer, Stream } from "effect" +import { CodeMode, CodeModeLive } from "./code-mode/index.ts" +import { AgentName, ContextEvent, ContextName, makeBaseEventFields } from "./domain.ts" + +export class CodeExecutionService extends Effect.Service()( + "@mini-agent/CodeExecutionService", + { + effect: Effect.gen(function*() { + const codeMode = yield* CodeMode + + const executeCode = Effect.fn("CodeExecutionService.executeCode")( + function*( + typescript: string, + ctx: TCtx, + agentName: AgentName, + contextName: ContextName, + nextEventNumber: number + ): Stream.Stream { + const baseFields = (trigger: boolean, offset: number) => + makeBaseEventFields(agentName, contextName, nextEventNumber + offset, trigger) + + yield* Effect.logDebug("Starting code execution", { codeLength: typescript.length }) + + return Stream.make( + new CodeExecutionStartedEvent({ + ...baseFields(false, 0), + codeHash: "pending" + }) + ).pipe( + Stream.concat( + Stream.fromEffect( + codeMode.run(typescript, ctx).pipe( + Effect.map(result => new CodeExecutionResultEvent({ + ...baseFields(false, 1), + codeHash: result.hash ?? "unknown", + success: true, + result: Option.some(result.value), + error: Option.none(), + durationMs: result.durationMs + })), + Effect.catchAll(error => Effect.succeed(new CodeExecutionResultEvent({ + ...baseFields(false, 1), + codeHash: "error", + success: false, + result: Option.none(), + error: Option.some(String(error)), + durationMs: 0 + }))) + ) + ) + ) + ) + } + ) + + return { executeCode } + }), + dependencies: [CodeModeLive] + } +) {} +``` + +### 5. Integration Points + +#### A. As Agent Tool +The LLM can emit code blocks that get executed: + +```typescript +// In llm-turn.ts, detect code blocks in assistant messages +// Emit CodeBlockStartEvent + CodeBlockEndEvent +// CodeExecutionService picks up CodeBlockEndEvent and runs execution +``` + +#### B. As Interactive Mode +User types `/code` to enter code editing mode: + +```typescript +// In chat-ui.ts +if (userMessage.startsWith("/code")) { + // Enter code editing mode + // Show CodeBlock component with editable code + // On submit, execute and show results +} +``` + +#### C. Context Capabilities +Provide agent capabilities to executed code: + +```typescript +const agentContext = { + // Read from agent's reduced context + getMessages: () => reducedContext.messages, + + // Send events back to agent + sendMessage: (content: string) => agent.addEvent(new UserMessageEvent(...)), + + // Access filesystem (scoped) + readFile: (path: string) => fs.readFileSync(path), + + // HTTP requests (with whitelist) + fetch: (url: string) => fetch(url) +} + +yield* codeMode.run(userCode, agentContext) +``` + +## Implementation Steps + +### Phase 1: Events & Types +1. Add code-related events to `domain.ts` +2. Update `ContextEvent` union +3. Add `CodeBlockItem` to feed items + +### Phase 2: OpenTUI Code Component +1. Create `src/cli/components/code-block.tsx` +2. Integrate Tree-Sitter for TypeScript syntax highlighting +3. Add diagnostics display with line markers + +### Phase 3: Feed Reducer +1. Extend `feedReducer` for code events +2. Add `CodeBlockRenderer` component +3. Update `FeedItemRenderer` switch + +### Phase 4: Execution Service +1. Create `CodeExecutionService` +2. Wire into agent layer +3. Add to CLI commands + +### Phase 5: Interactive Features +1. `/code` command for code editing mode +2. Real-time type checking feedback +3. Result display (JSON pretty-print, tables) + +## Open Questions + +1. **Editor UX**: Full editor in terminal or just code paste + execute? +2. **Persistence**: Store code blocks in event stream or separate? +3. **Capabilities**: What should `ctx` provide? Filesystem? HTTP? Agent state? +4. **Security**: Per-execution timeouts? Memory limits? Capability revocation? + +## Dependencies + +- OpenTUI's Code component (verify existence/API) +- Tree-Sitter WASM for TypeScript grammar +- May need custom component if Code doesn't exist + +## Testing + +1. Unit tests for new events/reducers +2. Integration tests for code execution flow +3. E2E tests for TUI code block rendering +4. Security tests for sandbox escapes in agent context + +## Notes + +- Keep `code-mode/` as standalone module (testable without actor deps) +- Events are the interface; execution is fire-and-forget from agent +- TypeScript rendering is the showcase feature (syntax + types + execution) diff --git a/package.json b/package.json index 1664ef1..ea0ec3c 100644 --- a/package.json +++ b/package.json @@ -54,9 +54,12 @@ "@opentelemetry/sdk-trace-base": "^2.2.0", "@opentui/core": "^0.1.55", "@opentui/react": "^0.1.55", + "acorn": "^8.15.0", + "acorn-walk": "^8.3.4", "effect": "^3.19.8", "react": "19", "react-dom": "19", + "sucrase": "^3.35.1", "yaml": "^2.7.0" } } diff --git a/src/code-mode/README.md b/src/code-mode/README.md new file mode 100644 index 0000000..1267ca9 --- /dev/null +++ b/src/code-mode/README.md @@ -0,0 +1,95 @@ +# Code Mode + +Executes untrusted TypeScript with controlled access to parent capabilities. + +## Why It Exists + +The agent needs to run LLM-generated code safely. Code mode provides: + +1. **Capability injection** - Parent passes callbacks (e.g., `writeFile`, `runCommand`) that code can invoke +2. **Security boundaries** - Code cannot access filesystem, network, or process directly +3. **Timeout enforcement** - Runaway code gets terminated + +## Architecture + +``` +TypeScript → Transpiler → JavaScript → Validator → Executor → Result + ↓ + Security check +``` + +### Services + +| Service | Purpose | +|---------|---------| +| `Transpiler` | TS→JS conversion (uses Bun's transpiler) | +| `Validator` | Static security analysis (blocks dangerous patterns) | +| `Executor` | Runs validated JS with injected context | +| `CodeMode` | Composite: transpile → validate → execute | + +### Validator (Security Analysis) + +The validator exists for SECURITY, not type-checking. TypeScript type-checks won't catch: + +```typescript +// All of these type-check fine but are dangerous: +eval("process.exit(1)") +import('fs').then(fs => fs.rmSync('/')) +({}).__proto__.constructor('return process')().exit() +``` + +The validator blocks: + +| Pattern | Why | +|---------|-----| +| `import`/`require` | No filesystem/network access | +| `eval`/`new Function()` | No sandbox escape | +| `__proto__`, `.constructor` | No prototype chain attacks | +| Undeclared globals | No `process`, `Bun`, `globalThis` access | + +**Globals allowlist**: Only safe builtins like `Object`, `Array`, `Math`, `JSON`, `Promise` are accessible. Code trying to access `process` or `Bun` fails validation. + +### Executor + +Runs validated JavaScript with an injected `ctx` object: + +```typescript +// User code receives: +ctx.callbacks // Functions provided by parent (async, cross-boundary) +ctx.data // Read-only data from parent +``` + +The unsafe executor uses `eval()` in the same V8 context. Security comes from the validator blocking dangerous constructs, not from process isolation. + +## Usage + +```typescript +import { CodeMode, CodeModeLive } from "./code-mode" + +const result = yield* CodeMode.run( + `export default async (ctx) => { + const content = await ctx.callbacks.readFile("config.json") + return JSON.parse(content).name + }`, + { + callbacks: { readFile: (path) => fs.readFile(path, "utf-8") }, + data: { userId: "123" } + } +) +``` + +## Files + +``` +code-mode/ +├── README.md # This file +├── index.ts # Public exports +├── services.ts # Service interfaces (Transpiler, Validator, Executor, CodeMode) +├── types.ts # ParentContext, ExecutionResult, Config +├── errors.ts # ValidationError, ExecutionError, TimeoutError +├── composite.ts # CodeMode implementation (orchestrates pipeline) +└── implementations/ + ├── transpiler-bun.ts # Uses Bun.Transpiler + └── validator-acorn.ts # AST-based security analysis + └── executor-unsafe.ts # eval()-based execution +``` diff --git a/src/code-mode/code-mode.test.ts b/src/code-mode/code-mode.test.ts new file mode 100644 index 0000000..73b8bc3 --- /dev/null +++ b/src/code-mode/code-mode.test.ts @@ -0,0 +1,785 @@ +/** + * Code Mode Tests + */ +import { describe, expect, it } from "@effect/vitest" +import { Cause, Effect, Exit } from "effect" + +import { CodeMode, CodeModeLive, ExecutionError, SecurityViolation, TimeoutError, TypeCheckError } from "./index.ts" + +interface TestCtx { + log: (msg: string) => void + add: (a: number, b: number) => number + asyncFetch: (key: string) => Promise + accumulate: (value: number) => void + getAccumulated: () => Array + value: number + items: Array + nested: { deep: { x: number } } +} + +function createTestContext(): { + ctx: TestCtx + accumulated: Array + logs: Array +} { + const accumulated: Array = [] + const logs: Array = [] + + return { + ctx: { + log: (msg) => { + logs.push(msg) + }, + add: (a, b) => a + b, + asyncFetch: async (key) => `fetched:${key}`, + accumulate: (v) => { + accumulated.push(v) + }, + getAccumulated: () => [...accumulated], + value: 42, + items: ["a", "b", "c"], + nested: { deep: { x: 100 } } + }, + accumulated, + logs + } +} + +const validCode = { + syncSimple: ` + export default (ctx) => ctx.add(ctx.value, 10) + `, + asyncSimple: ` + export default async (ctx) => { + const result = await ctx.asyncFetch("key1") + return result + ":" + ctx.value + } + `, + complex: ` + export default async (ctx) => { + ctx.log("Starting") + for (const item of ctx.items) { + ctx.accumulate(item.charCodeAt(0)) + } + const deepValue = ctx.nested.deep.x + const sum = ctx.add(deepValue, ctx.value) + ctx.log("Done") + return { sum, accumulated: ctx.getAccumulated() } + } + `, + withTypes: ` + interface MyCtx { + add: (a: number, b: number) => number + value: number + } + export default (ctx: MyCtx): number => { + const result: number = ctx.add(ctx.value, 100) + return result + } + `, + usingAllowedGlobals: ` + export default (ctx) => { + const arr = new Array(3).fill(0).map((_, i) => i) + const obj = Object.keys(ctx) + const str = JSON.stringify({ arr, obj }) + const parsed = JSON.parse(str) + return { ...parsed, math: Math.max(...arr) } + } + ` +} + +const invalidCode = { + staticImport: ` + import fs from "fs" + export default (ctx) => fs.readFileSync("/etc/passwd") + `, + dynamicImport: ` + export default async (ctx) => { + const fs = await import("fs") + return fs.readFileSync("/etc/passwd") + } + `, + require: ` + export default (ctx) => { + const fs = require("fs") + return fs.readFileSync("/etc/passwd") + } + `, + processAccess: ` + export default (ctx) => process.exit(1) + `, + globalThisAccess: ` + export default (ctx) => globalThis.process.env.SECRET + `, + evalCall: ` + export default (ctx) => eval("1 + 1") + `, + functionConstructor: ` + export default (ctx) => new Function("return process.env")() + `, + consoleAccess: ` + export default (ctx) => { + console.log("hacked") + return ctx.value + } + `, + fetchAccess: ` + export default async (ctx) => { + return await fetch("https://evil.com") + } + `, + setTimeoutAccess: ` + export default (ctx) => { + setTimeout(() => {}, 1000) + return ctx.value + } + ` +} + +const edgeCases = { + throwsError: ` + export default (ctx) => { + throw new Error("Intentional error") + } + `, + syntaxError: ` + export default (ctx) => { + return ctx.value + + } + `, + asyncThrows: ` + export default async (ctx) => { + await Promise.resolve() + throw new Error("Async error") + } + ` +} + +const typeScriptCases = { + withGenerics: ` + function identity(arg: T): T { return arg } + export default (ctx) => { + const num = identity(42) + const str = identity("hello") + return { num, str } + } + `, + withTypeAssertions: ` + export default (ctx) => { + const value = ctx.value as number + const result = (value * 2) as const + return result + } + `, + withEnums: ` + enum Status { Pending = "pending", Active = "active", Done = "done" } + export default (ctx) => { + const status: Status = Status.Active + return { status, allStatuses: Object.values(Status) } + } + `, + withClassTypes: ` + class Calculator { + private value: number + constructor(initial: number) { this.value = initial } + add(n: number): this { this.value += n; return this } + getValue(): number { return this.value } + } + export default (ctx) => { + const calc = new Calculator(ctx.value) + return calc.add(10).add(20).getValue() + } + `, + withUnionTypes: ` + type Result = { success: true; data: T } | { success: false; error: string } + function processValue(value: number): Result { + if (value < 0) return { success: false, error: "Negative value" } + return { success: true, data: value * 2 } + } + export default (ctx) => processValue(ctx.value) + `, + invalidTypeSyntax: ` + export default (ctx) => { + type Broken = { + name: string + } + ` +} + +const securityBypasses = { + constructorChain: ` + export default (ctx) => { + const FunctionConstructor = [].constructor.constructor + return FunctionConstructor("return 42")() + } + `, + objectPrototypeChain: ` + export default (ctx) => { + const F = Object.getPrototypeOf(function(){}).constructor + return new F("return 'escaped'")() + } + `, + arrowPrototypeChain: ` + export default (ctx) => { + const arrow = () => {} + const F = arrow.constructor + return F("return 'escaped via arrow'")() + } + `, + asyncFunctionConstructor: ` + export default async (ctx) => { + const asyncFn = async () => {} + const AsyncFunction = asyncFn.constructor + const evil = new AsyncFunction("return 'async escape'") + return await evil() + } + `, + generatorFunctionConstructor: ` + export default (ctx) => { + const gen = function*() {} + const GeneratorFunction = gen.constructor + const evilGen = new GeneratorFunction("yield 'gen escape'") + return evilGen().next().value + } + `, + protoAccess: ` + export default (ctx) => { + const obj = {} + const F = obj.__proto__.constructor.constructor + return F("return 'proto escape'")() + } + `, + computedConstructorAccess: ` + export default (ctx) => { + const key = "construct" + "or" + const F = [][key][key] + return F("return 'computed escape'")() + } + `, + bracketConstructorAccess: ` + export default (ctx) => { + const F = []["constructor"]["constructor"] + return F("return 'bracket escape'")() + } + ` +} + +describe("CodeMode", () => { + describe("Valid Code Execution", () => { + it.effect("executes sync code", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run( + validCode.syncSimple, + ctx + ) + expect(result.value).toBe(52) + expect(result.durationMs).toBeGreaterThan(0) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("executes async code", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run( + validCode.asyncSimple, + ctx + ) + expect(result.value).toBe("fetched:key1:42") + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("executes complex code with callbacks", () => + Effect.gen(function*() { + const { ctx, logs } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run }>( + validCode.complex, + ctx + ) + expect(result.value.sum).toBe(142) + expect(result.value.accumulated).toEqual([97, 98, 99]) + expect(logs).toEqual(["Starting", "Done"]) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("transpiles TypeScript with types", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run( + validCode.withTypes, + ctx + ) + expect(result.value).toBe(142) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("allows safe globals", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run< + TestCtx, + { arr: Array; obj: Array; math: number } + >(validCode.usingAllowedGlobals, ctx) + expect(result.value.arr).toEqual([0, 1, 2]) + expect(result.value.obj).toContain("value") + expect(result.value.math).toBe(2) + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("TypeScript Features", () => { + it.effect("handles generics", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run( + typeScriptCases.withGenerics, + ctx + ) + expect(result.value.num).toBe(42) + expect(result.value.str).toBe("hello") + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("handles type assertions", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run( + typeScriptCases.withTypeAssertions, + ctx + ) + expect(result.value).toBe(84) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("handles enums", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run< + TestCtx, + { status: string; allStatuses: Array } + >(typeScriptCases.withEnums, ctx) + expect(result.value.status).toBe("active") + expect(result.value.allStatuses).toContain("active") + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("handles classes", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run( + typeScriptCases.withClassTypes, + ctx + ) + expect(result.value).toBe(72) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("handles union types", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const result = yield* codeMode.run< + TestCtx, + { success: boolean; data?: number } + >(typeScriptCases.withUnionTypes, ctx) + expect(result.value.success).toBe(true) + expect(result.value.data).toBe(84) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("fails on invalid syntax", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(typeScriptCases.invalidTypeSyntax, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("Security - Forbidden Constructs", () => { + it.effect("rejects static imports", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.staticImport, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some") { + expect(error.value).toBeInstanceOf(SecurityViolation) + } + } + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects dynamic imports", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.dynamicImport, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects require()", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.require, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects process access", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.processAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects globalThis access", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.globalThisAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects eval()", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.evalCall, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects new Function()", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.functionConstructor, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects console access", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.consoleAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects fetch access", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.fetchAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("rejects setTimeout access", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(invalidCode.setTimeoutAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("Error Handling", () => { + it.effect("catches thrown errors", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(edgeCases.throwsError, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some") { + expect(error.value).toBeInstanceOf(ExecutionError) + expect((error.value as ExecutionError).message).toContain("Intentional error") + } + } + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("catches syntax errors", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(edgeCases.syntaxError, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("catches async thrown errors", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(edgeCases.asyncThrows, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some" && error.value instanceof ExecutionError) { + expect(error.value.message).toContain("Async error") + } + } + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("Timeout", () => { + it.effect("times out on long-running async code", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const neverResolves = ` + export default async (ctx) => { + await new Promise(() => {}) + return "never" + } + ` + const exit = yield* codeMode.run(neverResolves, ctx, { timeoutMs: 100 }).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some") { + expect(error.value).toBeInstanceOf(TimeoutError) + } + } + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("Compile Once Pattern", () => { + it.effect("compiles once and executes multiple times", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + const code = `export default (ctx) => ctx.value * 2` + const compiled = yield* codeMode.compile<{ value: number }>(code) + + const result1 = yield* compiled.execute({ value: 10 }) + const result2 = yield* compiled.execute({ value: 20 }) + + expect(result1.value).toBe(20) + expect(result2.value).toBe(40) + expect(compiled.hash).toBeTruthy() + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("Type Checking", () => { + it.effect("passes when types are correct", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + const code = ` + export default (ctx: { value: number }): number => ctx.value * 2 + ` + const result = yield* codeMode.run<{ value: number }, number>( + code, + { value: 21 }, + { + typeCheck: { + enabled: true, + compilerOptions: { strict: true }, + preamble: "" + } + } + ) + expect(result.value).toBe(42) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("fails when types are incorrect", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + const code = ` + export default (ctx: { value: number }): string => ctx.value * 2 + ` + const exit = yield* codeMode.run<{ value: number }, string>( + code, + { value: 21 }, + { + typeCheck: { + enabled: true, + compilerOptions: { strict: true }, + preamble: "" + } + } + ).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some") { + expect(error.value).toBeInstanceOf(TypeCheckError) + } + } + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("uses preamble for ctx type definitions", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + const preamble = ` + interface Ctx { + multiply: (a: number, b: number) => number + value: number + } + ` + const code = ` + export default (ctx: Ctx): number => ctx.multiply(ctx.value, 2) + ` + const result = yield* codeMode.run<{ multiply: (a: number, b: number) => number; value: number }, number>( + code, + { multiply: (a, b) => a * b, value: 21 }, + { + typeCheck: { + enabled: true, + compilerOptions: { strict: true }, + preamble + } + } + ) + expect(result.value).toBe(42) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("catches type errors with preamble", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + const preamble = ` + interface Ctx { + value: string + } + ` + const code = ` + export default (ctx: Ctx): number => ctx.value * 2 + ` + const exit = yield* codeMode.run<{ value: number }, number>( + code, + { value: 21 }, + { + typeCheck: { + enabled: true, + compilerOptions: { strict: true }, + preamble + } + } + ).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some") { + expect(error.value).toBeInstanceOf(TypeCheckError) + } + } + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("skips type checking when disabled", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + // This has a type error but should still run since type checking is disabled + const code = ` + const x: string = 42 + export default (ctx) => x + ` + const result = yield* codeMode.run( + code, + {}, + { typeCheck: { enabled: false, compilerOptions: {}, preamble: "" } } + ) + expect(result.value).toBe(42) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("reports correct line numbers excluding preamble", () => + Effect.gen(function*() { + const codeMode = yield* CodeMode + const preamble = ` + interface Ctx { + value: number + } + ` + const code = ` + const x: string = 123 + export default (ctx: Ctx) => x + ` + const exit = yield* codeMode.run<{ value: number }, string>( + code, + { value: 21 }, + { + typeCheck: { + enabled: true, + compilerOptions: { strict: true }, + preamble + } + } + ).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + if (Exit.isFailure(exit)) { + const error = Cause.failureOption(exit.cause) + if (error._tag === "Some" && error.value instanceof TypeCheckError) { + // Error should be on line 2 of user code, not including preamble + const firstDiag = error.value.diagnostics[0] + expect(firstDiag).toBeDefined() + expect(firstDiag!.line).toBe(2) + } + } + }).pipe(Effect.provide(CodeModeLive))) + }) + + describe("Security - Constructor Chain Bypasses", () => { + it.effect("blocks Array.constructor.constructor bypass", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.constructorChain, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("blocks Object.getPrototypeOf().constructor bypass", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.objectPrototypeChain, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("blocks arrow function constructor bypass", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.arrowPrototypeChain, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("blocks async function constructor bypass", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.asyncFunctionConstructor, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("blocks generator function constructor bypass", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.generatorFunctionConstructor, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("blocks __proto__ access bypass", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.protoAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + // Skip: Dynamic computed keys can't be caught by static analysis + it.skip("blocks computed property constructor access (static analysis limitation)", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.computedConstructorAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + + it.effect("blocks bracket notation constructor access", () => + Effect.gen(function*() { + const { ctx } = createTestContext() + const codeMode = yield* CodeMode + const exit = yield* codeMode.run(securityBypasses.bracketConstructorAccess, ctx).pipe(Effect.exit) + expect(Exit.isFailure(exit)).toBe(true) + }).pipe(Effect.provide(CodeModeLive))) + }) +}) diff --git a/src/code-mode/composite.ts b/src/code-mode/composite.ts new file mode 100644 index 0000000..b623849 --- /dev/null +++ b/src/code-mode/composite.ts @@ -0,0 +1,78 @@ +/** + * Code Mode Composite Service + * + * Orchestrates: type-check → transpile → validate → execute + */ +import { Effect, Layer } from "effect" + +import { SecurityViolation } from "./errors.ts" +import { CodeMode, Executor, Transpiler, TypeChecker, Validator } from "./services.ts" +import type { CodeModeConfig, CompiledModule } from "./types.ts" +import { defaultConfig, defaultTypeCheckConfig } from "./types.ts" + +function computeHash(str: string): string { + if (typeof Bun !== "undefined" && Bun.hash) { + return Bun.hash(str).toString(16) + } + let hash = 0 + for (let i = 0; i < str.length; i++) { + const char = str.charCodeAt(i) + hash = ((hash << 5) - hash) + char + hash = hash & hash + } + return Math.abs(hash).toString(16) +} + +export const CodeModeLive = Layer.effect( + CodeMode, + Effect.gen(function*() { + const typeChecker = yield* TypeChecker + const transpiler = yield* Transpiler + const validator = yield* Validator + const executor = yield* Executor + + const compile = Effect.fn("CodeMode.compile")(function*( + typescript: string, + config?: Partial + ) { + const fullConfig = { + ...defaultConfig, + ...config, + typeCheck: { ...defaultTypeCheckConfig, ...config?.typeCheck } + } + + // Type check first (if enabled) + yield* typeChecker.check(typescript, fullConfig.typeCheck) + + const javascript = yield* transpiler.transpile(typescript) + + const validation = yield* validator.validate(javascript, fullConfig) + if (!validation.valid) { + return yield* Effect.fail( + new SecurityViolation({ + details: validation.errors.map((e) => `${e.type}: ${e.message}`).join("; ") + }) + ) + } + + const hash = computeHash(javascript) + + return { + javascript, + hash, + execute: (ctx: TCtx) => executor.execute(javascript, ctx, fullConfig) + } as CompiledModule + }) + + const run = Effect.fn("CodeMode.run")(function*( + typescript: string, + ctx: TCtx, + config?: Partial + ) { + const compiled = yield* compile(typescript, config) + return yield* compiled.execute(ctx) + }) + + return CodeMode.of({ run, compile }) + }) +) diff --git a/src/code-mode/errors.ts b/src/code-mode/errors.ts new file mode 100644 index 0000000..ff904eb --- /dev/null +++ b/src/code-mode/errors.ts @@ -0,0 +1,92 @@ +/** + * Code Mode Error Types + */ +import { Schema } from "effect" + +const SourceLocation = Schema.Struct({ + line: Schema.Number, + column: Schema.Number +}) + +const ValidationErrorType = Schema.Literal( + "import", + "global", + "syntax", + "forbidden_construct" +) + +export class ValidationError extends Schema.TaggedError()( + "ValidationError", + { + type: ValidationErrorType, + message: Schema.String, + location: Schema.optional(SourceLocation), + cause: Schema.optional(Schema.Defect) + } +) {} + +export class ValidationWarning extends Schema.TaggedClass()( + "ValidationWarning", + { + type: Schema.String, + message: Schema.String, + location: Schema.optional(SourceLocation) + } +) {} + +export class TranspilationError extends Schema.TaggedError()( + "TranspilationError", + { + message: Schema.String, + cause: Schema.optional(Schema.Defect) + } +) {} + +const TypeCheckDiagnostic = Schema.Struct({ + message: Schema.String, + line: Schema.optional(Schema.Number), + column: Schema.optional(Schema.Number), + code: Schema.optional(Schema.Number) +}) +export type TypeCheckDiagnostic = typeof TypeCheckDiagnostic.Type + +export class TypeCheckError extends Schema.TaggedError()( + "TypeCheckError", + { + diagnostics: Schema.Array(TypeCheckDiagnostic) + } +) {} + +export class ExecutionError extends Schema.TaggedError()( + "ExecutionError", + { + message: Schema.String, + stack: Schema.optional(Schema.String), + cause: Schema.optional(Schema.Defect) + } +) {} + +export class TimeoutError extends Schema.TaggedError()( + "TimeoutError", + { + timeoutMs: Schema.Number + } +) {} + +export class SecurityViolation extends Schema.TaggedError()( + "SecurityViolation", + { + details: Schema.String, + cause: Schema.optional(Schema.Defect) + } +) {} + +export const CodeModeError = Schema.Union( + ValidationError, + TranspilationError, + TypeCheckError, + ExecutionError, + TimeoutError, + SecurityViolation +) +export type CodeModeError = typeof CodeModeError.Type diff --git a/src/code-mode/implementations/executor.ts b/src/code-mode/implementations/executor.ts new file mode 100644 index 0000000..416a09c --- /dev/null +++ b/src/code-mode/implementations/executor.ts @@ -0,0 +1,100 @@ +/** + * Code Executor + * + * Runs validated JavaScript with injected context. + * Uses eval() - security comes from validation, not isolation. + */ +import { Effect, Layer } from "effect" + +import { ExecutionError, TimeoutError } from "../errors.ts" +import { Executor } from "../services.ts" +import type { CodeModeConfig, ExecutionResult } from "../types.ts" + +export const ExecutorLive = Layer.succeed( + Executor, + Executor.of({ + execute: ( + javascript: string, + ctx: TCtx, + config: CodeModeConfig + ): Effect.Effect, ExecutionError | TimeoutError> => + Effect.async, ExecutionError | TimeoutError>((resume) => { + const start = performance.now() + let completed = false + let timeoutId: ReturnType | undefined + + const safeResume = (effect: Effect.Effect, ExecutionError | TimeoutError>) => { + if (completed) return + completed = true + if (timeoutId) clearTimeout(timeoutId) + resume(effect) + } + + // Wrap code to extract and call default export + const wrappedCode = ` + (function(ctx) { + const module = { exports: {} }; + const exports = module.exports; + ${javascript} + const exported = module.exports.default || module.exports; + if (typeof exported === 'function') { + return exported(ctx); + } + return exported; + }) + ` + + try { + const fn = eval(wrappedCode) as (ctx: TCtx) => unknown + + const timeoutPromise = new Promise((_, reject) => { + timeoutId = setTimeout(() => { + reject(new TimeoutError({ timeoutMs: config.timeoutMs })) + }, config.timeoutMs) + }) + + Promise.race([Promise.resolve(fn(ctx)), timeoutPromise]) + .then((value) => { + safeResume( + Effect.succeed({ + value: value as TResult, + durationMs: performance.now() - start + }) + ) + }) + .catch((err) => { + if (err instanceof TimeoutError) { + safeResume(Effect.fail(err)) + } else { + const e = err as Error + safeResume( + Effect.fail( + new ExecutionError({ + message: e.message, + stack: e.stack, + cause: e + }) + ) + ) + } + }) + } catch (e) { + const err = e as Error + safeResume( + Effect.fail( + new ExecutionError({ + message: err.message, + stack: err.stack, + cause: err + }) + ) + ) + } + + return Effect.sync(() => { + completed = true + if (timeoutId) clearTimeout(timeoutId) + }) + }) + }) +) diff --git a/src/code-mode/implementations/transpiler.ts b/src/code-mode/implementations/transpiler.ts new file mode 100644 index 0000000..266de65 --- /dev/null +++ b/src/code-mode/implementations/transpiler.ts @@ -0,0 +1,43 @@ +/** + * TypeScript Transpiler + * + * Uses Bun.Transpiler when available, falls back to sucrase for Node/vitest. + */ +import { Effect, Layer } from "effect" +import { transform } from "sucrase" + +import { TranspilationError } from "../errors.ts" +import { Transpiler } from "../services.ts" + +const isBunAvailable = typeof globalThis.Bun !== "undefined" + +export const TranspilerLive = Layer.succeed( + Transpiler, + Transpiler.of({ + transpile: (typescript) => + Effect.try({ + try: () => { + if (isBunAvailable) { + const transpiler = new Bun.Transpiler({ + loader: "ts", + target: "browser", + trimUnusedImports: true + }) + return transpiler.transformSync(typescript) + } + // Fallback to sucrase for Node/vitest + // Must include "imports" to convert ESM to CommonJS for eval() + const result = transform(typescript, { + transforms: ["typescript", "imports"] + }) + return result.code + }, + catch: (e) => { + const err = e as Error + return new TranspilationError({ + message: err.message + }) + } + }) + }) +) diff --git a/src/code-mode/implementations/type-checker.ts b/src/code-mode/implementations/type-checker.ts new file mode 100644 index 0000000..9263e43 --- /dev/null +++ b/src/code-mode/implementations/type-checker.ts @@ -0,0 +1,484 @@ +/** + * TypeScript Type Checker + * + * Uses the TypeScript compiler API to perform type checking on user code. + * The preamble allows injecting type definitions (e.g., ctx interface) + * that are checked but not included in the transpiled output. + */ +import { Effect, Layer } from "effect" +import ts from "typescript" + +import { TypeCheckError } from "../errors.ts" +import { TypeChecker } from "../services.ts" +import type { TypeCheckConfig, TypeCheckResult } from "../types.ts" + +const LIB_SOURCE = ` +declare var NaN: number; +declare var Infinity: number; +declare function parseInt(s: string, radix?: number): number; +declare function parseFloat(string: string): number; +declare function isNaN(number: number): boolean; +declare function isFinite(number: number): boolean; +declare function encodeURI(uri: string): string; +declare function decodeURI(encodedURI: string): string; +declare function encodeURIComponent(uriComponent: string): string; +declare function decodeURIComponent(encodedURIComponent: string): string; +declare function atob(data: string): string; +declare function btoa(data: string): string; + +interface ObjectConstructor { + keys(o: object): string[]; + values(o: { [s: string]: T } | ArrayLike): T[]; + entries(o: { [s: string]: T } | ArrayLike): [string, T][]; + assign(target: T, source: U): T & U; + fromEntries(entries: Iterable): { [k: string]: T }; +} +declare var Object: ObjectConstructor; + +interface Array { + length: number; + push(...items: T[]): number; + pop(): T | undefined; + map(callbackfn: (value: T, index: number, array: T[]) => U): U[]; + filter(predicate: (value: T, index: number, array: T[]) => unknown): T[]; + reduce(callbackfn: (previousValue: U, currentValue: T) => U, initialValue: U): U; + find(predicate: (value: T, index: number) => boolean): T | undefined; + findIndex(predicate: (value: T, index: number) => boolean): number; + includes(searchElement: T): boolean; + indexOf(searchElement: T): number; + join(separator?: string): string; + slice(start?: number, end?: number): T[]; + concat(...items: (T | T[])[]): T[]; + forEach(callbackfn: (value: T, index: number, array: T[]) => void): void; + some(predicate: (value: T, index: number) => boolean): boolean; + every(predicate: (value: T, index: number) => boolean): boolean; + sort(compareFn?: (a: T, b: T) => number): this; + reverse(): T[]; + fill(value: T, start?: number, end?: number): this; + flat(depth?: D): T[]; +} +interface ArrayConstructor { + new (...items: T[]): T[]; + isArray(arg: any): arg is any[]; + from(arrayLike: ArrayLike): T[]; +} +declare var Array: ArrayConstructor; + +interface String { + length: number; + charAt(pos: number): string; + charCodeAt(index: number): number; + concat(...strings: string[]): string; + indexOf(searchString: string, position?: number): number; + slice(start?: number, end?: number): string; + substring(start: number, end?: number): string; + toLowerCase(): string; + toUpperCase(): string; + trim(): string; + split(separator: string | RegExp, limit?: number): string[]; + replace(searchValue: string | RegExp, replaceValue: string): string; + match(regexp: string | RegExp): RegExpMatchArray | null; + includes(searchString: string, position?: number): boolean; + startsWith(searchString: string, position?: number): boolean; + endsWith(searchString: string, endPosition?: number): boolean; + padStart(maxLength: number, fillString?: string): string; + padEnd(maxLength: number, fillString?: string): string; + repeat(count: number): string; +} +interface StringConstructor { + new (value?: any): String; + (value?: any): string; + fromCharCode(...codes: number[]): string; +} +declare var String: StringConstructor; + +interface Number { + toString(radix?: number): string; + toFixed(fractionDigits?: number): string; + toExponential(fractionDigits?: number): string; + toPrecision(precision?: number): string; +} +interface NumberConstructor { + new (value?: any): Number; + (value?: any): number; + isNaN(number: unknown): boolean; + isFinite(number: unknown): boolean; + isInteger(number: unknown): boolean; + parseInt(string: string, radix?: number): number; + parseFloat(string: string): number; + MAX_VALUE: number; + MIN_VALUE: number; + MAX_SAFE_INTEGER: number; + MIN_SAFE_INTEGER: number; +} +declare var Number: NumberConstructor; + +interface Boolean {} +interface BooleanConstructor { + new (value?: any): Boolean; + (value?: any): boolean; +} +declare var Boolean: BooleanConstructor; + +interface Date { + getTime(): number; + getFullYear(): number; + getMonth(): number; + getDate(): number; + getDay(): number; + getHours(): number; + getMinutes(): number; + getSeconds(): number; + getMilliseconds(): number; + toISOString(): string; + toJSON(): string; +} +interface DateConstructor { + new (): Date; + new (value: number | string): Date; + now(): number; + parse(s: string): number; +} +declare var Date: DateConstructor; + +interface RegExp { + test(string: string): boolean; + exec(string: string): RegExpExecArray | null; +} +interface RegExpMatchArray extends Array { + index?: number; + input?: string; +} +interface RegExpExecArray extends Array { + index: number; + input: string; +} +interface RegExpConstructor { + new (pattern: string, flags?: string): RegExp; + (pattern: string, flags?: string): RegExp; +} +declare var RegExp: RegExpConstructor; + +interface JSON { + parse(text: string): any; + stringify(value: any, replacer?: any, space?: string | number): string; +} +declare var JSON: JSON; + +interface Math { + abs(x: number): number; + ceil(x: number): number; + floor(x: number): number; + round(x: number): number; + max(...values: number[]): number; + min(...values: number[]): number; + pow(x: number, y: number): number; + sqrt(x: number): number; + random(): number; + sin(x: number): number; + cos(x: number): number; + tan(x: number): number; + log(x: number): number; + exp(x: number): number; + PI: number; + E: number; +} +declare var Math: Math; + +interface PromiseLike { + then( + onfulfilled?: ((value: T) => TResult1 | PromiseLike) | null, + onrejected?: ((reason: any) => TResult2 | PromiseLike) | null + ): PromiseLike; +} +interface Promise { + then( + onfulfilled?: ((value: T) => TResult1 | PromiseLike) | null, + onrejected?: ((reason: any) => TResult2 | PromiseLike) | null + ): Promise; + catch( + onrejected?: ((reason: any) => TResult | PromiseLike) | null + ): Promise; + finally(onfinally?: (() => void) | null): Promise; +} +interface PromiseConstructor { + new (executor: (resolve: (value: T | PromiseLike) => void, reject: (reason?: any) => void) => void): Promise; + resolve(value: T | PromiseLike): Promise; + resolve(): Promise; + reject(reason?: any): Promise; + all(values: T): Promise<{ -readonly [P in keyof T]: Awaited }>; + race(values: T): Promise>; +} +declare var Promise: PromiseConstructor; +type Awaited = T extends PromiseLike ? Awaited : T; + +interface Map { + get(key: K): V | undefined; + set(key: K, value: V): this; + has(key: K): boolean; + delete(key: K): boolean; + clear(): void; + size: number; + forEach(callbackfn: (value: V, key: K, map: Map) => void): void; + keys(): IterableIterator; + values(): IterableIterator; + entries(): IterableIterator<[K, V]>; +} +interface MapConstructor { + new (entries?: readonly (readonly [K, V])[] | null): Map; +} +declare var Map: MapConstructor; + +interface Set { + add(value: T): this; + has(value: T): boolean; + delete(value: T): boolean; + clear(): void; + size: number; + forEach(callbackfn: (value: T, value2: T, set: Set) => void): void; + keys(): IterableIterator; + values(): IterableIterator; + entries(): IterableIterator<[T, T]>; +} +interface SetConstructor { + new (values?: readonly T[] | null): Set; +} +declare var Set: SetConstructor; + +interface WeakMap { + get(key: K): V | undefined; + set(key: K, value: V): this; + has(key: K): boolean; + delete(key: K): boolean; +} +interface WeakMapConstructor { + new (entries?: readonly (readonly [K, V])[] | null): WeakMap; +} +declare var WeakMap: WeakMapConstructor; + +interface WeakSet { + add(value: T): this; + has(value: T): boolean; + delete(value: T): boolean; +} +interface WeakSetConstructor { + new (values?: readonly T[] | null): WeakSet; +} +declare var WeakSet: WeakSetConstructor; + +interface SymbolConstructor { + (description?: string): symbol; + for(key: string): symbol; + keyFor(sym: symbol): string | undefined; + readonly iterator: unique symbol; +} +declare var Symbol: SymbolConstructor; + +interface BigInt { + toString(radix?: number): string; +} +interface BigIntConstructor { + (value: bigint | boolean | number | string): bigint; +} +declare var BigInt: BigIntConstructor; + +interface Error { + name: string; + message: string; + stack?: string; +} +interface ErrorConstructor { + new (message?: string): Error; + (message?: string): Error; +} +declare var Error: ErrorConstructor; +declare var TypeError: ErrorConstructor; +declare var RangeError: ErrorConstructor; +declare var SyntaxError: ErrorConstructor; +declare var URIError: ErrorConstructor; +declare var EvalError: ErrorConstructor; +declare var ReferenceError: ErrorConstructor; + +interface ArrayBuffer { + readonly byteLength: number; + slice(begin: number, end?: number): ArrayBuffer; +} +interface ArrayBufferConstructor { + new (byteLength: number): ArrayBuffer; +} +declare var ArrayBuffer: ArrayBufferConstructor; + +interface DataView { + getInt8(byteOffset: number): number; + getUint8(byteOffset: number): number; + getInt16(byteOffset: number, littleEndian?: boolean): number; + getUint16(byteOffset: number, littleEndian?: boolean): number; + getInt32(byteOffset: number, littleEndian?: boolean): number; + getUint32(byteOffset: number, littleEndian?: boolean): number; + getFloat32(byteOffset: number, littleEndian?: boolean): number; + getFloat64(byteOffset: number, littleEndian?: boolean): number; + setInt8(byteOffset: number, value: number): void; + setUint8(byteOffset: number, value: number): void; +} +interface DataViewConstructor { + new (buffer: ArrayBuffer, byteOffset?: number, byteLength?: number): DataView; +} +declare var DataView: DataViewConstructor; + +interface TypedArray { + readonly length: number; + readonly byteLength: number; + readonly byteOffset: number; + [index: number]: T; +} +interface Int8Array extends TypedArray {} +interface Uint8Array extends TypedArray {} +interface Uint8ClampedArray extends TypedArray {} +interface Int16Array extends TypedArray {} +interface Uint16Array extends TypedArray {} +interface Int32Array extends TypedArray {} +interface Uint32Array extends TypedArray {} +interface Float32Array extends TypedArray {} +interface Float64Array extends TypedArray {} +interface BigInt64Array extends TypedArray {} +interface BigUint64Array extends TypedArray {} + +interface TypedArrayConstructor { + new (length: number): T; + new (array: ArrayLike): T; + new (buffer: ArrayBuffer, byteOffset?: number, length?: number): T; +} +declare var Int8Array: TypedArrayConstructor; +declare var Uint8Array: TypedArrayConstructor; +declare var Uint8ClampedArray: TypedArrayConstructor; +declare var Int16Array: TypedArrayConstructor; +declare var Uint16Array: TypedArrayConstructor; +declare var Int32Array: TypedArrayConstructor; +declare var Uint32Array: TypedArrayConstructor; +declare var Float32Array: TypedArrayConstructor; +declare var Float64Array: TypedArrayConstructor; +declare var BigInt64Array: TypedArrayConstructor; +declare var BigUint64Array: TypedArrayConstructor; + +declare function structuredClone(value: T): T; + +interface ProxyHandler { + get?(target: T, p: string | symbol, receiver: any): any; + set?(target: T, p: string | symbol, value: any, receiver: any): boolean; + has?(target: T, p: string | symbol): boolean; + deleteProperty?(target: T, p: string | symbol): boolean; + apply?(target: T, thisArg: any, argArray: any[]): any; + construct?(target: T, argArray: any[], newTarget: Function): object; +} +interface ProxyConstructor { + new (target: T, handler: ProxyHandler): T; + revocable(target: T, handler: ProxyHandler): { proxy: T; revoke: () => void }; +} +declare var Proxy: ProxyConstructor; + +interface Reflect { + get(target: T, propertyKey: PropertyKey): any; + set(target: T, propertyKey: PropertyKey, value: any): boolean; + has(target: T, propertyKey: PropertyKey): boolean; + deleteProperty(target: T, propertyKey: PropertyKey): boolean; + ownKeys(target: T): (string | symbol)[]; +} +declare var Reflect: Reflect; + +type PropertyKey = string | number | symbol; +interface IterableIterator { + next(): { value: T; done: boolean }; + [Symbol.iterator](): IterableIterator; +} +interface ArrayLike { + readonly length: number; + readonly [n: number]: T; +} +` + +export const TypeCheckerLive = Layer.succeed( + TypeChecker, + TypeChecker.of({ + check: (typescript: string, config: TypeCheckConfig) => + Effect.gen(function*() { + if (!config.enabled) { + return { valid: true, diagnostics: [] } satisfies TypeCheckResult + } + + const fullSource = config.preamble + "\n" + typescript + const preambleLines = config.preamble.split("\n").length + + const compilerOptions: ts.CompilerOptions = { + target: ts.ScriptTarget.ESNext, + module: ts.ModuleKind.ESNext, + ...config.compilerOptions, + noEmit: true + } + + const sourceFile = ts.createSourceFile( + "code.ts", + fullSource, + ts.ScriptTarget.ESNext, + true + ) + + const libFile = ts.createSourceFile( + "lib.d.ts", + LIB_SOURCE, + ts.ScriptTarget.ESNext, + true + ) + + const files = new Map([ + ["code.ts", sourceFile], + ["lib.d.ts", libFile] + ]) + + const host: ts.CompilerHost = { + getSourceFile: (name) => files.get(name), + writeFile: () => {}, + getDefaultLibFileName: () => "lib.d.ts", + useCaseSensitiveFileNames: () => true, + getCanonicalFileName: (f) => f, + getCurrentDirectory: () => "/", + getNewLine: () => "\n", + fileExists: (name) => files.has(name), + readFile: () => undefined, + directoryExists: () => true, + getDirectories: () => [] + } + + const program = ts.createProgram(["code.ts"], compilerOptions, host) + const allDiagnostics = [ + ...program.getSyntacticDiagnostics(sourceFile), + ...program.getSemanticDiagnostics(sourceFile) + ] + + const diagnostics = allDiagnostics + .map((d) => { + const message = ts.flattenDiagnosticMessageText(d.messageText, "\n") + if (d.file && d.start !== undefined) { + const { character, line } = d.file.getLineAndCharacterOfPosition(d.start) + const adjustedLine = line - preambleLines + if (adjustedLine < 0) { + return null + } + return { + message, + line: adjustedLine + 1, + column: character + 1, + code: d.code + } + } + return { message, code: d.code } + }) + .filter((d): d is NonNullable => d !== null) + + if (diagnostics.length > 0) { + return yield* Effect.fail(new TypeCheckError({ diagnostics })) + } + + return { valid: true, diagnostics: [] } satisfies TypeCheckResult + }) + }) +) diff --git a/src/code-mode/implementations/validator.ts b/src/code-mode/implementations/validator.ts new file mode 100644 index 0000000..161060b --- /dev/null +++ b/src/code-mode/implementations/validator.ts @@ -0,0 +1,244 @@ +/** + * Security Validator + * + * Static analysis to detect forbidden constructs in JavaScript. + * Uses regex for fast screening, then AST for precise validation. + */ +import * as acorn from "acorn" +import * as walk from "acorn-walk" +import { Effect, Layer } from "effect" + +import type { ValidationWarning } from "../errors.ts" +import { ValidationError } from "../errors.ts" +import { Validator } from "../services.ts" +import type { CodeModeConfig, ValidationResult } from "../types.ts" + +type AnyNode = any + +function getLineColumn(code: string, index: number): { line: number; column: number } { + const beforeMatch = code.slice(0, index) + const lines = beforeMatch.split("\n") + const lastLine = lines[lines.length - 1] + return { + line: lines.length, + column: lastLine ? lastLine.length : 0 + } +} + +export const ValidatorLive = Layer.succeed( + Validator, + Validator.of({ + validate: (code: string, config: CodeModeConfig): Effect.Effect => + Effect.sync(() => { + const errors: Array = [] + const warnings: Array = [] + + // Phase 1: Fast regex check + for (const pattern of config.forbiddenPatterns) { + const match = code.match(pattern) + if (match && match.index !== undefined) { + const loc = getLineColumn(code, match.index) + errors.push( + new ValidationError({ + type: "forbidden_construct", + message: `Forbidden pattern: ${pattern.source}`, + location: loc + }) + ) + } + } + + // Phase 2: Parse AST + let ast: acorn.Node + try { + ast = acorn.parse(code, { + ecmaVersion: 2022, + sourceType: "module", + locations: true, + allowAwaitOutsideFunction: true + }) + } catch (e) { + const err = e as Error & { loc?: { line: number; column: number } } + errors.push( + new ValidationError({ + type: "syntax", + message: err.message, + location: err.loc, + cause: err + }) + ) + return { valid: false, errors, warnings } + } + + // Phase 3: Collect declared identifiers + const declaredIdentifiers = new Set(["ctx", "module", "exports", "undefined"]) + + const collectIds = (node: AnyNode): void => { + if (!node) return + if (node.type === "Identifier" && node.name) { + declaredIdentifiers.add(node.name) + } else if (node.type === "ObjectPattern" && node.properties) { + for (const prop of node.properties) { + if (prop.value) collectIds(prop.value) + if (prop.type === "RestElement" && prop.argument) collectIds(prop.argument) + } + } else if (node.type === "ArrayPattern" && node.elements) { + for (const el of node.elements) if (el) collectIds(el) + } else if (node.type === "AssignmentPattern" && node.left) { + collectIds(node.left) + } else if (node.type === "RestElement" && node.argument) { + collectIds(node.argument) + } + } + + walk.simple(ast, { + VariableDeclarator(node: AnyNode) { + if (node.id) collectIds(node.id) + }, + FunctionDeclaration(node: AnyNode) { + if (node.id?.name) declaredIdentifiers.add(node.id.name) + if (node.params) { for (const p of node.params) collectIds(p) } + }, + FunctionExpression(node: AnyNode) { + if (node.params) { for (const p of node.params) collectIds(p) } + }, + ArrowFunctionExpression(node: AnyNode) { + if (node.params) { for (const p of node.params) collectIds(p) } + }, + ClassDeclaration(node: AnyNode) { + if (node.id?.name) declaredIdentifiers.add(node.id.name) + }, + CatchClause(node: AnyNode) { + if (node.param) collectIds(node.param) + } + } as walk.SimpleVisitors) + + // Phase 4: Check forbidden constructs + const dangerousProps = ["constructor", "__proto__", "__defineGetter__", "__defineSetter__"] + + walk.simple(ast, { + MemberExpression(node: AnyNode) { + const propName = node.property?.type === "Identifier" + ? node.property.name + : (node.property?.type === "Literal" ? node.property.value : null) + if (propName && dangerousProps.includes(propName)) { + errors.push( + new ValidationError({ + type: "forbidden_construct", + message: `Accessing .${propName} is forbidden`, + location: node.loc?.start + }) + ) + } + }, + ImportDeclaration(node: AnyNode) { + errors.push( + new ValidationError({ + type: "import", + message: `Static imports forbidden: "${node.source?.value}"`, + location: node.loc?.start + }) + ) + }, + ImportExpression(node: AnyNode) { + errors.push( + new ValidationError({ + type: "import", + message: "Dynamic import() forbidden", + location: node.loc?.start + }) + ) + }, + ExportAllDeclaration(node: AnyNode) { + errors.push( + new ValidationError({ + type: "import", + message: `Export * forbidden: "${node.source?.value}"`, + location: node.loc?.start + }) + ) + }, + CallExpression(node: AnyNode) { + if (node.callee?.type === "Identifier") { + if (node.callee.name === "require") { + errors.push( + new ValidationError({ + type: "import", + message: "require() forbidden", + location: node.loc?.start + }) + ) + } + if (node.callee.name === "eval") { + errors.push( + new ValidationError({ + type: "forbidden_construct", + message: "eval() forbidden", + location: node.loc?.start + }) + ) + } + } + // Block .constructor() calls + if ( + node.callee?.type === "MemberExpression" && + node.callee.property?.type === "Identifier" && + node.callee.property.name === "constructor" + ) { + errors.push( + new ValidationError({ + type: "forbidden_construct", + message: "Calling .constructor() forbidden", + location: node.loc?.start + }) + ) + } + }, + NewExpression(node: AnyNode) { + if (node.callee?.type === "Identifier" && node.callee.name === "Function") { + errors.push( + new ValidationError({ + type: "forbidden_construct", + message: "new Function() forbidden", + location: node.loc?.start + }) + ) + } + } + } as walk.SimpleVisitors) + + // Phase 5: Check undeclared global access + walk.ancestor(ast, { + Identifier(node: AnyNode, _state: unknown, ancestors: Array) { + const parent = ancestors[ancestors.length - 2] + if (!parent) return + + // Skip property access, object keys, labels, export/import specifiers + if ( + (parent.type === "MemberExpression" && parent.property === node && !parent.computed) || + (parent.type === "Property" && parent.key === node && !parent.computed) || + parent.type === "LabeledStatement" || parent.type === "BreakStatement" || + parent.type === "ContinueStatement" || parent.type === "ExportSpecifier" || + parent.type === "ImportSpecifier" || parent.type === "ImportDefaultSpecifier" || + (parent.type === "MethodDefinition" && parent.key === node) + ) { + return + } + + const name = node.name + if (name && !declaredIdentifiers.has(name) && !config.allowedGlobals.includes(name)) { + errors.push( + new ValidationError({ + type: "global", + message: `Access to global "${name}" forbidden`, + location: node.loc?.start + }) + ) + } + } + } as walk.AncestorVisitors) + + return { valid: errors.length === 0, errors, warnings } + }) + }) +) diff --git a/src/code-mode/index.ts b/src/code-mode/index.ts new file mode 100644 index 0000000..e4ba681 --- /dev/null +++ b/src/code-mode/index.ts @@ -0,0 +1,92 @@ +/** + * Code Mode + * + * Executes untrusted TypeScript with controlled access to parent capabilities. + * + * @example + * ```ts + * import { Effect } from "effect" + * import { CodeMode, CodeModeLive } from "./code-mode" + * + * const program = Effect.gen(function*() { + * const codeMode = yield* CodeMode + * return yield* codeMode.run( + * `export default async (ctx) => { + * const data = await ctx.fetchData("key") + * return { value: ctx.multiplier * 2, fetched: data } + * }`, + * { + * fetchData: async (key) => `data for ${key}`, + * multiplier: 21 + * } + * ) + * }) + * + * const result = await Effect.runPromise(program.pipe(Effect.provide(CodeModeLive))) + * ``` + * + * @example Type checking with preamble + * ```ts + * const result = yield* codeMode.run( + * `export default (ctx: Ctx) => ctx.value * 2`, + * { value: 21 }, + * { + * typeCheck: { + * enabled: true, + * preamble: `interface Ctx { value: number }`, + * compilerOptions: { strict: true } + * } + * } + * ) + * ``` + */ +import { Layer } from "effect" + +import { CodeModeLive as CodeModeComposite } from "./composite.ts" +import { ExecutorLive } from "./implementations/executor.ts" +import { TranspilerLive } from "./implementations/transpiler.ts" +import { TypeCheckerLive } from "./implementations/type-checker.ts" +import { ValidatorLive } from "./implementations/validator.ts" + +// Types +export type { + CodeModeConfig, + CompiledModule, + ExecutionResult, + TypeCheckConfig, + TypeCheckResult, + ValidationResult +} from "./types.ts" +export { defaultConfig, defaultTypeCheckConfig } from "./types.ts" + +// Errors +export { + CodeModeError, + ExecutionError, + SecurityViolation, + TimeoutError, + TranspilationError, + TypeCheckError, + ValidationError, + ValidationWarning +} from "./errors.ts" +export type { TypeCheckDiagnostic } from "./errors.ts" + +// Services +export { CodeMode, Executor, Transpiler, TypeChecker, Validator } from "./services.ts" + +// Implementations (for custom composition) +export { ExecutorLive } from "./implementations/executor.ts" +export { TranspilerLive } from "./implementations/transpiler.ts" +export { TypeCheckerLive } from "./implementations/type-checker.ts" +export { ValidatorLive } from "./implementations/validator.ts" + +// Default layer +export const CodeModeLive = CodeModeComposite.pipe( + Layer.provide(Layer.mergeAll( + TypeCheckerLive, + TranspilerLive, + ValidatorLive, + ExecutorLive + )) +) diff --git a/src/code-mode/services.ts b/src/code-mode/services.ts new file mode 100644 index 0000000..36dcd0c --- /dev/null +++ b/src/code-mode/services.ts @@ -0,0 +1,87 @@ +/** + * Code Mode Service Interfaces + */ +import type { Effect } from "effect" +import { Context } from "effect" + +import type { ExecutionError, SecurityViolation, TimeoutError, TranspilationError, TypeCheckError } from "./errors.ts" +import type { + CodeModeConfig, + CompiledModule, + ExecutionResult, + TypeCheckConfig, + TypeCheckResult, + ValidationResult +} from "./types.ts" + +/** + * Transpiles TypeScript to JavaScript + */ +export class Transpiler extends Context.Tag("@app/code-mode/Transpiler")< + Transpiler, + { + readonly transpile: (typescript: string) => Effect.Effect + } +>() {} + +/** + * Validates JavaScript for security violations + */ +export class Validator extends Context.Tag("@app/code-mode/Validator")< + Validator, + { + readonly validate: ( + code: string, + config: CodeModeConfig + ) => Effect.Effect + } +>() {} + +/** + * Type-checks TypeScript code using the compiler API + */ +export class TypeChecker extends Context.Tag("@app/code-mode/TypeChecker")< + TypeChecker, + { + readonly check: ( + typescript: string, + config: TypeCheckConfig + ) => Effect.Effect + } +>() {} + +/** + * Executes validated JavaScript + */ +export class Executor extends Context.Tag("@app/code-mode/Executor")< + Executor, + { + readonly execute: ( + javascript: string, + ctx: TCtx, + config: CodeModeConfig + ) => Effect.Effect, ExecutionError | TimeoutError | SecurityViolation> + } +>() {} + +/** + * Main API: type-check → transpile → validate → execute + */ +export class CodeMode extends Context.Tag("@app/code-mode/CodeMode")< + CodeMode, + { + readonly run: ( + typescript: string, + ctx: TCtx, + config?: Partial + ) => Effect.Effect< + ExecutionResult, + TranspilationError | TypeCheckError | ExecutionError | TimeoutError | SecurityViolation + > + + readonly compile: ( + typescript: string, + config?: Partial + ) => Effect.Effect, TranspilationError | TypeCheckError | SecurityViolation> + } +>() {} diff --git a/src/code-mode/types.ts b/src/code-mode/types.ts new file mode 100644 index 0000000..5e15fbb --- /dev/null +++ b/src/code-mode/types.ts @@ -0,0 +1,160 @@ +/** + * Code Mode Core Types + */ +import type { Effect } from "effect" +import type { CompilerOptions } from "typescript" + +import type { ExecutionError, TimeoutError, TypeCheckDiagnostic, ValidationError, ValidationWarning } from "./errors.ts" + +/** + * Result of code execution + */ +export interface ExecutionResult { + readonly value: T + readonly durationMs: number +} + +/** + * Validation result from security analysis + */ +export interface ValidationResult { + readonly valid: boolean + readonly errors: ReadonlyArray + readonly warnings: ReadonlyArray +} + +/** + * Result of type checking + */ +export interface TypeCheckResult { + readonly valid: boolean + readonly diagnostics: ReadonlyArray +} + +/** + * Pre-compiled module for repeated execution + */ +export interface CompiledModule { + readonly javascript: string + readonly hash: string + readonly execute: ( + ctx: TCtx + ) => Effect.Effect, ExecutionError | TimeoutError> +} + +/** + * Type checking configuration + */ +export interface TypeCheckConfig { + /** Enable type checking (default: false) */ + readonly enabled: boolean + /** TypeScript compiler options */ + readonly compilerOptions: CompilerOptions + /** Type definitions prepended to user code for type checking only */ + readonly preamble: string +} + +/** + * Configuration + */ +export interface CodeModeConfig { + readonly timeoutMs: number + readonly allowedGlobals: ReadonlyArray + readonly forbiddenPatterns: ReadonlyArray + readonly typeCheck: TypeCheckConfig +} + +export const defaultConfig: CodeModeConfig = { + timeoutMs: 5000, + allowedGlobals: [ + // Safe built-ins + "Object", + "Array", + "String", + "Number", + "Boolean", + "Date", + "Math", + "JSON", + "Promise", + "Map", + "Set", + "WeakMap", + "WeakSet", + "Symbol", + "BigInt", + "Proxy", + "Reflect", + // Errors + "Error", + "TypeError", + "RangeError", + "SyntaxError", + "URIError", + "EvalError", + "ReferenceError", + // Typed arrays + "ArrayBuffer", + "DataView", + "Int8Array", + "Uint8Array", + "Uint8ClampedArray", + "Int16Array", + "Uint16Array", + "Int32Array", + "Uint32Array", + "Float32Array", + "Float64Array", + "BigInt64Array", + "BigUint64Array", + // Utilities + "isNaN", + "isFinite", + "parseFloat", + "parseInt", + "encodeURI", + "decodeURI", + "encodeURIComponent", + "decodeURIComponent", + "atob", + "btoa", + "structuredClone", + // Constants + "NaN", + "Infinity", + "undefined" + ], + forbiddenPatterns: [ + /process\s*[.[\]]/, + /require\s*\(/, + /import\s*\(/, + /import\s+.*from/, + /eval\s*\(/, + /Function\s*\(/, + /globalThis/, + /window\s*[.[\]]/, + /global\s*[.[\]]/, + /self\s*[.[\]]/, + /Deno\s*[.[\]]/, + /Bun\s*[.[\]]/ + ], + typeCheck: { + enabled: false, + compilerOptions: { + strict: true, + noEmit: true, + skipLibCheck: true + }, + preamble: "" + } +} + +export const defaultTypeCheckConfig: TypeCheckConfig = { + enabled: false, + compilerOptions: { + strict: true, + noEmit: true, + skipLibCheck: true + }, + preamble: "" +}