"Cannot find module ..." when running TypeDoc outside of TS project folder

[davidjenkins]

Expected Behavior

Compile same as calling tsc directly when specifying path to tsconfig file.

Calling tsc directly from any directory like tsc -project /path/to/some/far/away/tsconfig.json works without any problems.

Actual Behavior

Cannot find typings in node_modules folder that is in same folder as tsconfig file. Throws errors like "Cannot find module '<module_name>'.".

Steps to reproduce the bug

• Create project folder for source code (/my-library/src)
  • with tsconfig.json file
  • with node_modules folder
    • with various typings in @types folder
• Create project folder for docs (/my-library/docs)
  • with package.json file
    • with typedoc depedency
    • with typescript depedency
    • with build script to run typedoc "typedoc --json api.json --tsconfig ../src/tsconfig.json"
• Run build script, throws errors about not finding typings that exist in the node_modules folder that is in the same folder as the tsconfig file.

Environment

• Typedoc version: 0.17.6
• TypeScript version: 3.8.3
• Node.js version: 12.16.3
• OS: Windows 10

Workarounds

• Use build script to change current working directory, like "cd ../src && typedoc --json ../docs/api.json --tsconfig tsconfig.json"
• Use --ignoreCompilerErrors

[Gerrit0]

So, turns out that the undocumented configFilePath property that shows up in the return value from parseJsonConfigFileContent is important. If you delete it, then when you create a program without it you'll end up with a program that can't always find @types packages... When reworking the options, it showed up and since it didn't seem to do anything, I just deleted it. Restoring it and adding a dummy option for it fixes this.

typedoc/src/lib/utils/options/sources/typescript.ts

Lines 21 to 23 in 935e10a

	// This is not a TS option, but TypeScript will add it to the compiler options
	// so we need to remove it or TypeDoc will error since it isn't declared.
	'configFilePath'

[Gerrit0]

v0.17.7 released with a fix :)