This issue has come up during our upgrade to v5. It wasn't an issue in v4. We use babel's preset for typescript via the babel-loader for webpack.
Consider a basic type error
const x: number = "word"; //Type '"word"' is not assignable to type 'number'.ts(2322)
On initial compile with the webpack dev server, this correctly throws an error.
TS2322: Type '"word"' is not assignable to type 'number'.
> 40 | const x: number = "word";
| ^
ℹ ｢wdm｣: Failed to compile.
However, on a subsequent file save (with the same error still present), the dev server reports a successful compile despite the error still existing.
ℹ ｢wdm｣: Compiled successfully.
webpack.config.js
new ForkTsCheckerWebpackPlugin({
eslint: undefined,
async: false,
issue: { scope: "webpack" },
formatter: "codeframe",
logger: { infrastructure: "silent", issues: "console" },
typescript: {
enabled: true,
configFile: path.resolve(__dirname, "..", "..", "tsconfig.local.json"),
diagnosticOptions: { syntactic: true, semantic: true, declaration: false, global: false },
mode: "write-references",
build: false,
profile: false,
memoryLimit: 2048,
},
});
tsconfig.local.json
"compilerOptions": {
"allowJs": true,
"allowSyntheticDefaultImports": true,
"declaration": false,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"esModuleInterop": true,
"forceConsistentCasingInFileNames": true,
"importsNotUsedAsValues": "preserve",
"lib": ["ES2020", "dom"],
"module": "ES2020",
"moduleResolution": "node",
"sourceMap": true,
"skipLibCheck": true,
"target": "ES2019",
"jsx": "react",
"noUnusedLocals": true,
"baseUrl": ".",
},
"include": ["app/javascript/**/*"],
"exclude": ["node_modules"],
"compileOnSave": true
Environment
- @babel/preset-typescript: 7.10.4
- babel-loader: 8.1.0
- fork-ts-checker-webpack-plugin: 5.0.7
- typescript: 3.9.6
- eslint: 7.4.0
- webpack: 4.43.0
- webpack-dev-server: 3.11.0
This issue has come up during our upgrade to v5. It wasn't an issue in v4. We use babel's preset for typescript via the babel-loader for webpack.
Consider a basic type error
const x: number = "word"; //Type '"word"' is not assignable to type 'number'.ts(2322)On initial compile with the webpack dev server, this correctly throws an error.
However, on a subsequent file save (with the same error still present), the dev server reports a successful compile despite the error still existing.
webpack.config.js
tsconfig.local.json
Environment