[NewErrors] 4.9.0-dev.20220828 vs 4.8.2

[typescript-bot]

The following errors were reported by 4.9.0-dev.20220828, but not by 4.8.2
Pipeline that generated this bug
Logs for the pipeline run
File that generated the pipeline

This run considered 200 popular TS repos from GH (after skipping the top 0).

Successfully analyzed 58 of 100 visited repos

Outcome	Count
Detected interesting changes	3
Detected no interesting changes	55
Package install failed	19
Project-graph error in old TS	1
Too many errors in old TS	22

codex-team/editor.js

2 of 3 projects failed to build with the old tsc and were ignored

tsconfig.build.json

• error TS2367: This comparison appears to be unintentional because the types 'PasteConfig' and 'boolean' have no overlap.
  • src/components/modules/paste.ts#L287

neoclide/coc.nvim

tsconfig.json

• error TS2367: This comparison appears to be unintentional because the types 'UltiSnippetOption' and 'boolean' have no overlap.
  • src/commands.ts#L66

palantir/blueprint

4 of 27 projects failed to build with the old tsc and were ignored

packages/eslint-plugin/src/tsconfig.json

• error TS2322: Type 'RegExpExecArray | null' is not assignable to type 'RegExpMatchArray | null'.
  • packages/eslint-plugin/src/rules/classes-constants.ts#L96

packages/eslint-plugin/test/tsconfig.json

• error TS2322: Type 'RegExpExecArray | null' is not assignable to type 'RegExpMatchArray | null'.
  • packages/eslint-plugin/src/rules/classes-constants.ts#L96

packages/tslint-config/src/tsconfig.json

• error TS2322: Type 'RegExpExecArray | null' is not assignable to type 'RegExpMatchArray | null'.
  • packages/tslint-config/src/rules/blueprintClassesConstantsRule.ts#L83

[RyanCavanaugh]

editor.js break is due to #49865. Opened codex-team/editor.js#2131

[RyanCavanaugh]

neoclude/coc.nvim -- opened neoclide/coc.nvim#4122

Both this and the prior one appear to be correct finds

[RyanCavanaugh]

Opened palantir/blueprint#5520

[RyanCavanaugh]

Root cause of regexp thing is #49682 for future readers