ErrorLens turbo-charges language diagnostic features by making diagnostics stand out more prominently, highlighting the entire line wherever a diagnostic is generated by the language and also prints the message inline.

Features

• Highlight lines containing diagnostics
• Append diagnostic as text to the end of the line
• Show icons in gutter
• Show message in status bar

Commands (6)

Command	Description
errorLens.toggle	Error Lens: Toggle (Enable/Disable) Everything
errorLens.toggleError	Error Lens: Toggle Errors
errorLens.toggleWarning	Error Lens: Toggle Warnings
errorLens.toggleInfo	Error Lens: Toggle Info
errorLens.toggleHint	Error Lens: Toggle Hint
errorLens.copyProblemMessage	Error Lens: Copy Problem Message

Settings (42)

Error Lens extension settings start with errorLens.

Setting	Default	Description
enabled	true	Controls all decorations and features (except commands).
fontFamily	""	Font family of inline message.
fontWeight	"normal"	Font weight of inline message. "normal" is alias for 400, "bold" is alias for 700).
fontStyleItalic	false	When enabled - shows inline message in italic font style.
fontSize	""	Font size of inline message (CSS units).
margin	"4ch"	Distance between the last word on the line and the start of inline message (CSS units).
padding	""	Padding of the message. Visible difference when message colors are set. issues/23. Example: 2px 1ch.
borderRadius	"3px"	Border radius of the message. Visible difference when message colors are set. issues/23. Example: 5px.
enabledDiagnosticLevels	["error","warning","info"]	Customize which diagnostic levels to highlight.
messageTemplate	"$message"	Template used for all inline messages. Whitespace between items is important. List of variables: - $message - diagnostic message text - $count - Number of diagnostics on the line - $severity - Severity prefix taken from #errorLens.severityText# - $source - Source of diagnostic e.g. "eslint" - $code - Code of the diagnostic
messageMaxChars	500	Cut off inline message if it's longer than this value.
severityText	["ERROR","WARNING","INFO","HINT"]	Replaces $severity variable in #errorLens.messageTemplate#.
messageEnabled	true	Controls whether inline message is shown or not (Including background highlight).
statusBarIconsEnabled	false	When enabled - shows highlighted error/warning icons in status bar.
statusBarIconsUseBackground	true	When enabled - highlights status bar icons with background, when disabled - with foreground.
statusBarIconsAtZero	"hide"	What to do when there are 0 errors/warnings - hide the item or strip its background color.
statusBarMessageEnabled	false	When enabled - shows message in status bar.
statusBarColorsEnabled	false	When enabled - use message decoration foreground as color of Status Bar text.
statusBarMessageType	"activeLine"	Pick what to show in Status Bar: closest message or only message for the active line.
statusBarCommand	"goToProblem"	Pick command that activates on click for Status Bar.
statusBarMessageTemplate	""	Template for status bar message. See #errorLens.messageTemplate#.
exclude	[]	Specify messages that should not be highlighted (RegExp).
excludeBySource	[]	Specify sources that should not be highlighted (string). Example: ["eslint"]
excludePatterns	[]	Exclude files by using glob pattern. Example ["**/*.{ts,js}"]
light		Specify color of decorations for when the light color theme is active.
delay	0	Delay (ms) before showing problem decorations (0 to disable). Minimum delay of 500 is enforced by the extension. New errors will be added with this delay; old errors that were fixed should disappear faster.
onSave	false	When enabled - updates decorations only on document save (manual).
onSaveTimeout	1000	Time period (ms) that used for showing decorations after the document save.
followCursor	"allLines"	Highlight only portion of the problems.
followCursorMore	0	Augments followCursor. Adds number of lines to top and bottom when followCursor is activeLine. Adds number of closest problems when followCursor is closestProblem
gutterIconsEnabled	false	When enabled - shows gutter icons (In place of the debug breakpoint icon).
gutterIconsFollowCursorOverride	true	When enabled and #errorLens.followCursor# setting is not allLines, then gutter icons would be rendered for all problems. But line decorations (background, message) only for active line.
gutterIconSize	"100%"	Change gutter icon size. Examples: auto, contain, cover, 50%, 150%
gutterIconSet	"default"	Change gutter icon style.
errorGutterIconPath	""	Absolute path to error gutter icon.
warningGutterIconPath	""	Absolute path to warning gutter icon.
infoGutterIconPath	""	Absolute path to info gutter icon.
errorGutterIconColor	"#e45454"	Error color of circle gutter icon set.
warningGutterIconColor	"#ff942f"	Warning color of circle gutter icon set.
infoGutterIconColor	"#00b7e4"	Info color of circle gutter icon set.
removeLinebreaks	true	When enabled - replaces line breaks in inline diagnostic message with whitespaces.
scrollbarHackEnabled	false	When enabled - prevents showing horizontal scrollbar in editor (caused by inline decorations).

Colors (26)

Color	Dark	Light	HC	Description
errorLens.errorBackground	#e454541b	#e4545420	#e454541b	Background color of the entire line containing error.
errorLens.errorMessageBackground	#fff0	#fff0	#fff0	Background color of the error message.
errorLens.errorBackgroundLight	#e4545420	#e4545420	#e4545420	Background color of the entire line containing error (Only in light themes).
errorLens.errorForeground	#ff6464	#e45454	#ff6464	Text color used to highlight lines containing errors.
errorLens.errorForegroundLight	#e45454	#e45454	#e45454	Text color used to highlight lines containing errors (Only in light themes).
errorLens.warningBackground	#ff942f1b	#ff942f20	#ff942f1b	Background color used to highlight lines containing warnings.
errorLens.warningMessageBackground	#fff0	#fff0	#fff0	Background color of the warning message.
errorLens.warningBackgroundLight	#ff942f20	#ff942f20	#ff942f20	Background color used to highlight lines containing warnings (Only in light themes).
errorLens.warningForeground	#fa973a	#ff942f	#fa973a	Text color used to highlight lines containing warnings.
errorLens.warningForegroundLight	#ff942f	#ff942f	#ff942f	Text color used to highlight lines containing warnings (Only in light themes).
errorLens.infoBackground	#00b7e420	#00b7e420	#00b7e420	Background color used to highlight lines containing info.
errorLens.infoMessageBackground	#fff0	#fff0	#fff0	Background color of the info message.
errorLens.infoBackgroundLight	#00b7e420	#00b7e420	#00b7e420	Background color used to highlight lines containing info (Only in light themes).
errorLens.infoForeground	#00b7e4	#00b7e4	#00b7e4	Text color used to highlight lines containing info.
errorLens.infoForegroundLight	#00b7e4	#00b7e4	#00b7e4	Text color used to highlight lines containing info (Only in light themes).
errorLens.hintBackground	#17a2a220	#17a2a220	#17a2a220	Background color used to highlight lines containing hints.
errorLens.hintMessageBackground	#fff0	#fff0	#fff0	Background color of the hint message.
errorLens.hintBackgroundLight	#17a2a220	#17a2a220	#17a2a220	Background color used to highlight lines containing hints (Only in light themes).
errorLens.hintForeground	#2faf64	#2faf64	#2faf64	Text color used to highlight lines containing hints.
errorLens.hintForegroundLight	#2faf64	#2faf64	#2faf64	Text color used to highlight lines containing hints (Only in light themes).
errorLens.statusBarIconErrorForeground	#ff6464	#e45454	#ff6464	Status bar icon item error color.
errorLens.statusBarIconWarningForeground	#fa973a	#ff942f	#fa973a	Status bar icon item error color.
errorLens.statusBarErrorForeground	#ff6464	#e45454	#ff6464	Status bar item error color.
errorLens.statusBarWarningForeground	#fa973a	#ff942f	#fa973a	Status bar item warning color.
errorLens.statusBarInfoForeground	#00b7e4	#00b7e4	#00b7e4	Status bar item info color.
errorLens.statusBarHintForeground	#2faf64	#2faf64	#2faf64	Status bar item hint color.

Colors can be configured in settings.json (workbench.colorCustomizations section)

#fff0 - is a completely transparent color.

Upstream issues

Please upvote the following VS Code issues:

• Api for editor insets
• [theming] Access theme's colors programmatically
• [theming] when completing color keys in settings, fill in current value
• Inline text adornments break word wrapping
• OnClick event on Gutter