skip library check only in node_modules

Question

There are several questions about disabling errors in mistyped node_modules (e.g., this one, or this one), but they all involve using the skipLibCheck compiler flag.

Are there other solutions to this problem (e.g., using include or exclude)? I have a couple of hand-written .d.ts files (stricter types than available on DefinitelyTyped) that I'd like to type check, so the wholesale disabling of typechecking on these files is not appealing.

Answer 1

There is no granular control over type checking, you either check all declaration files or none unfortunately. From compiler code:

export function skipTypeChecking(sourceFile: SourceFile, options: CompilerOptions) {
    // If skipLibCheck is enabled, skip reporting errors if file is a declaration file.
    // If skipDefaultLibCheck is enabled, skip reporting errors if file contains a
    // '/// <reference no-default-lib="true"/>' directive.
    return options.skipLibCheck && sourceFile.isDeclarationFile || options.skipDefaultLibCheck && sourceFile.hasNoDefaultLib;
}