I get this warning every time I build for production. When I build for production I disable source maps in the rollup output config.
output: [{ dir: "...", format: "...", sourcemap: isProd ? false : true }]
I use the same tsconfig for dev and production, tsconfig.json:
{
"compilerOptions": {
// Output
"target": "ESNext",
"module": "ESNEXT",
"sourceMap": true,
"jsx": "react",
"noEmit": true,
// Compile time code checking
"strict": true,
// Libraries
"lib": ["dom", "esnext"],
// Imports
"moduleResolution": "node",
"allowSyntheticDefaultImports": true,
"esModuleInterop": true
},
"exclude": ["dist", "app"]
}
I understand that this is the reason for the warning from looking at the rollup plugin source code:
/**
* Validate that the `compilerOptions.sourceMap` option matches `outputOptions.sourcemap`.
* @param context Rollup plugin context used to emit warnings.
* @param compilerOptions Typescript compiler options.
* @param outputOptions Rollup output options.
* @param autoSetSourceMap True if the `compilerOptions.sourceMap` property was set to `true`
* by the plugin, not the user.
*/
function validateSourceMap(context, compilerOptions, outputOptions, autoSetSourceMap) {
if (compilerOptions.sourceMap && !outputOptions.sourcemap && !autoSetSourceMap) {
context.warn(`@rollup/plugin-typescript: Rollup 'sourcemap' option must be set to generate source maps.`);
}
else if (!compilerOptions.sourceMap && outputOptions.sourcemap) {
context.warn(`@rollup/plugin-typescript: Typescript 'sourceMap' compiler option must be set to generate source maps.`);
}
}
But I would prefer to not add the complexity of one tsconfig for dev and another for production.
What would be a good way to get rid of this warning?
Use a base tsconfig and add only the options that are different to dev and prod versions, as reference see: