TypeScript compile or type-check failure

April 30, 2026 · View on GitHub

Playbook ID: typescript-compile Category: build Severity: high Tags: typescript, tsc, javascript, typecheck

What this failure means

The TypeScript compiler rejected the code because a type, symbol, or module import does not match the project's declared types.

Common log signals

error ts
tsc:
type 'string' is not assignable to type
property does not exist on type
cannot find name
compilation complete. watching for file changes

Diagnosis

The TypeScript compiler rejected the code because a type, symbol, or module import does not match the project's declared types.

Fix steps

  1. Run tsc --noEmit locally to reproduce the failing diagnostic with the same config.
  2. Inspect the first TypeScript error in the log and update the code or type definitions to match.
  3. If a generated type file changed, regenerate it before committing.
  4. Confirm path aliases in tsconfig.json match the repository layout used in CI.

Validation

  • tsc --noEmit

Likely files to inspect

  • tsconfig.json
  • package.json
  • src/**/*.ts
  • src/**/*.tsx

Run Faultline

faultline analyze build.log
faultline explain typescript-compile
faultline workflow build.log --json --mode agent

Search phrases this page answers

  • TypeScript compile or type-check failure
  • Build: typescript compile or type-check failure
  • compilation complete. watching for file changes
  • GitHub Actions typescript compile or type-check failure
  • faultline explain typescript-compile

Generated from playbooks/bundled/log/build/typescript-compile.yaml. Do not edit directly — run make docs-generate.