Migrate to esbuild/Vitest and upgrade @actions/* to ESM-only versions#492
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bosesuneha merged 2 commits intoAzure:mainfrom Feb 24, 2026
Merged
Migrate to esbuild/Vitest and upgrade @actions/* to ESM-only versions#492bosesuneha merged 2 commits intoAzure:mainfrom
bosesuneha merged 2 commits intoAzure:mainfrom
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Replace the legacy ncc/Jest/Babel build stack with a modern ESM toolchain: Build: - Replace @vercel/ncc with esbuild (--platform=node --target=node20 --format=esm) - Add createRequire banner for CJS interop in ESM bundle - Add "type": "module" to package.json - Add tsc --noEmit typecheck script (esbuild strips types without checking) - Add typecheck to husky pre-commit hook Dependencies: - Bump @actions/core@3, exec@3, io@3, tool-cache@4 (ESM-only) - Replace jest/ts-jest/@babel/* with vitest@4 Tests: - Convert 29 test files: jest.fn()→vi.fn(), jest.mock()→vi.mock(), jest.spyOn()→vi.spyOn() - Fix vitest 4 compat: mockImplementation requires args, mock call tracking, await .rejects CI: - Update build step from ncc build → npm run build - Update composite action to use npm run build
Change module/moduleResolution from ES2022/bundler to NodeNext/NodeNext and target from ES2022 to ES2020. - Add .js extensions to all relative imports across 59 source/test files (required by NodeNext module resolution) - Add vitest/globals to tsconfig types array for global test API declarations
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Tatsinnit
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Feb 24, 2026
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Note: big diff is mostly package-lock.json +2000/-9000 lines from reducing transitive dependencies
Upgrade @actions/core@3, @actions/exec@3, @actions/io@3, @actions/tool-cache@4 which are now ESM-only, and migrate the build toolchain accordingly.