untold lava
I'm trying to use typescript to perform static code analysis and I'm having a lot of trouble of reading types from a transpiled .js file, since it's returning any instead of the type that's on the .d.ts file. From what I understand, typescript itself should automatically pick the types form the d.ts if the file is in the same folder and have the same name.
My setup is:
--folder
-----index.js
-----index.d.ts
And this is my createProgram:
program = ts.createProgram({ oldProgram: program, rootNames: ['/folder/index.js'], options: { target: ts.ScriptTarget.ESNext, jsx: ts.JsxEmit.React, allowJs: true, checkJs: true, module: ts.ModuleKind.NodeNext, baseUrl: '.', esModuleInterop: true, moduleResolution: ts.ModuleResolutionKind.NodeNext, declarationMap: true, declaration: true, lib: ['lib.esnext.d.ts', 'lib.dom.d.ts'], paths: { 'react/jsx-runtime': ['node_modules/react/jsx-runtime'], }, }, });
I already tried a bunch of different options here, but no luck.
The const sourceFiles = program.getSourceFiles(); doesn't pick up the d.ts file automatically into the program context, which I think it should, but I'm not 100% sure. I can do that manually by adding /// <reference path="./index.d.ts" /> at the top of the index.js file. But calling typeChecker.getTypeAtLocation will still return any and not the correct type.
Why isn't typescript correctly resolving types and how can I make it? One workaround that I'm doing right now it's adding the .d.ts file instead of the .js and my code works, but for my use case I actually need to analyise the .js sometimes.
thorn lotus