This repository was archived by the owner on Jun 16, 2025. It is now read-only.
This repository was archived by the owner on Jun 16, 2025. It is now read-only.
Support typescript "extends" and "types" fields #720
Description
Feature request description
In TypeScript you can referenced your dependencies in the extends field, for example:
"extends": "@some/package/tsconfig.base.json"
or just
"extends": "@some/package"
So when processing typescript files we need to look into the tsconfig.json file and if we see an extends key we need to treat that like an import.
Also, in tsconfig.json you can specify a types field which sort of implicitly imports those types into every file, e.g.
"types": ["node", "jest"]
Creates dependencies on @types/node and @types/jest
Example implementation:
const requirePackageName = require('require-package-name');
const tsconfigParser: Parser = (filePath, deps, rootDir) => {
const content = readFileSync(filePath, {encoding: 'utf8'});
const foundDeps: string[] = [];
const tsconfigJson = JSON.parse(content);
const types = tsconfigJson.compilerOptions?.types;
if (types) {
for (const pkg of types) {
foundDeps.push(`@types/${pkg}`);
}
}
if (tsconfigJson.extends) {
foundDeps.push(tsconfigJson.extends);
}
return foundDeps.map(p => requirePackageName(p)).filter(Boolean);
};