DevTools Toolbox Error Analysis - Component (React) Errors

Period: 2026-03-08 03:02 to 2026-03-14 21:48 Total Errors: 15

Overview

The analysis reveals 15 component (React) errors, with the most common error being 'TypeError' (93.3%). 53.3% occur on aurora. Windows users account for 60.0% of all errors.

Platform Distribution

• Windows: 9 errors (60.0%)
• Darwin: 5 errors (33.3%)
• Linux: 1 errors (6.7%)

Channel Distribution

• aurora: 8 errors (53.3%)
• default: 4 errors (26.7%)
• nightly: 3 errors (20.0%)

Error Breakdown by Category

1. TypeError in EvaluationContextSelector - 4 errors (26.7%)

Component:

• Primary: EvaluationContextSelector

Error location:

get name@resource://devtools/client/fronts/targets/worker.js:35:5

Affected:

• Channels: nightly (3), aurora (1)
• Platforms: Windows (4)

2. TypeError in JSTerm - 3 errors (20.0%)

Component:

• Primary: JSTerm

Error location:

setOption@resource://devtools/client/shared/sourceeditor/editor.js:3469:10

Affected:

• Channels: default (3)
• Platforms: Darwin (3)

3. TypeError in ConsoleSettings - 2 errors (13.3%)

Component:

• Primary: ConsoleSettings

Error location:

get doc@resource://devtools/client/framework/toolbox.js:616:5

Affected:

• Channels: aurora (2)
• Platforms: Windows (2)

4. TypeError in MenuButton - 2 errors (13.3%)

Component:

• Primary: MenuButton

Error location:

UNSAFE_componentWillReceiveProps@resource://devtools/client/shared/components/menu/MenuButton.js:135:17

Affected:

• Channels: aurora (2)
• Platforms: Linux (1), Windows (1)

5. TypeError in HTMLPreview - 1 errors (6.7%)

Component:

• Primary: HTMLPreview

Error location:

maybeCancelContentJSExecution@resource://gre/modules/RemoteWebNavigation.sys.mjs:42:5

Affected:

• Channels: aurora (1)
• Platforms: Darwin (1)

6. InternalError in MenuList - 1 errors (6.7%)

Component:

• Primary: MenuList

Error location:

escape@resource://devtools/client/shared/vendor/react.mjs:1736:34

Affected:

• Channels: aurora (1)
• Platforms: Windows (1)

7. TypeError in Breakpoints - 1 errors (6.7%)

Component:

• Primary: Breakpoints

Error location:

lineInner@resource://devtools/client/shared/sourceeditor/codemirror6/codemirror6.bundle.mjs:1:5250

Affected:

• Channels: aurora (1)
• Platforms: Windows (1)

8. TypeError in JSTerm - 1 errors (6.7%)

Component:

• Primary: JSTerm

Error location:

setOption@resource://devtools/client/shared/sourceeditor/editor.js:3481:10

Affected:

• Channels: default (1)
• Platforms: Darwin (1)

Top Error Types Summary

1. TypeError in EvaluationContextSelector - 4 occurrences (26.7%)
2. TypeError in JSTerm - 3 occurrences (20.0%)
3. TypeError in ConsoleSettings - 2 occurrences (13.3%)
4. TypeError in MenuButton - 2 occurrences (13.3%)
5. TypeError in HTMLPreview - 1 occurrences (6.7%)
6. InternalError in MenuList - 1 occurrences (6.7%)
7. TypeError in Breakpoints - 1 occurrences (6.7%)
8. TypeError in JSTerm - 1 occurrences (6.7%)

Actionable Insights

• 1. TypeError in EvaluationContextSelector accounts for 26.7% of all errors (4 occurrences)
• 3. Platform-specific: TypeError in EvaluationContextSelector is predominantly on Windows (4/4 errors)

Recommendations

Priority 1: TypeError in EvaluationContextSelector

• File location: devtools/client/fronts/targets/worker.js:35:5
• Impact: 26.7% of all errors

Priority 2: TypeError in JSTerm

• File location: devtools/client/shared/sourceeditor/editor.js:3469:10
• Impact: 20.0% of all errors

Priority 3: TypeError in ConsoleSettings

• File location: devtools/client/framework/toolbox.js:616:5
• Impact: 13.3% of all errors

Priority 4: TypeError in MenuButton

• File location: devtools/client/shared/components/menu/MenuButton.js:135:17
• Impact: 13.3% of all errors

Priority 5: TypeError in HTMLPreview

• File location: gre/modules/RemoteWebNavigation.sys.mjs:42:5
• Impact: 6.7% of all errors

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DevTools Toolbox Component (React) Errors (7-day analysis)

15 errors recorded from 2026-03-08 03:02 to 2026-03-14 21:48. Top issues: TypeError in EvaluationContextSelector (4 errors), TypeError in JSTerm (3 errors), TypeError in ConsoleSettings (2 errors). aurora channel represents 53.3% of errors. Windows accounts for 60.0% of errors.