2 days ago I rolled out a node.js service via GitHub workflow without errors. After adding just one tiny test and increasing the version the github workflow triggered compilation errors today.
The task where the workflow fails is:
tsc --noEmit --noErrorTruncation --pretty --resolveJsonModule -p tsconfig.json
Found 10 errors in 3 files.
Errors Files
1 src/routes/__test__/signout.test.ts:21
1 src/routes/__test__/signup.test.ts:151
8 src/routes/__test__/update.test.ts:94
Error: Process completed with exit code 2.
whereas running the same 'npm run check' locally, there are no errors.
Environments:
GitHub:
node: v20.11.1
npm: 10.2.4
yarn: 1.22.22
(The screenshot below shows version 16, where the error occurred first. Then I updated, but still the same outcome)
Local (WSL2):
node: v20.11.1
npm: 10.5.0
The referenced tsconfig.json:
{
"compilerOptions": {
"target": "ES6" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
"module": "commonjs" /* Specify what module code is generated. */,
"noEmit": true /* Disable emitting files from a compilation. */,
"esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
"forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
"strict": true /* Enable all strict type-checking options. */,
"skipLibCheck": true /* Skip type checking all .d.ts files. */
},
"include": ["src", "global.d.ts", "src/**/*.ts", "src/**/*.tsx", "src/**/*.vue", "tests/**/*.ts", "tests/**/*.tsx"],
"exclude": [
"node_modules",
"./node_modules",
"./node_modules/*",
"./node_modules/@types/node/index.d.ts",
"node_modules/**",
"plugins",
"public"
]
}
The particular crazy thing about these errors is that I use
.set('Cookie', cookie)
literally hundreds of times in countless tests, yet the tsc compilation error on GitHub only lists 10 errors. Should it not list all *.test.ts files?
What could make the compilation fail all the sudden versus not failing 2 days ago?
Please advise with methods of how to approach this situation.


Turned out, I had to remove my node_modules folder and rerun npm install
After that I could reproduce the same TS errors with npm run check.
Also: Duplicate to TSC build errors during github-action but compiles fine locally