typescriptts-morph

Why ts-morph cannot get the classes of a typescript project?

I use ts-morph to analyse the classes inheritance relationship of a project:

I download this opensource projectantv/x6 for testing:

import { Project } from "ts-morph";

const project = new Project();

project.addDirectoryAtPath("/Users/john/github_repo/@antv/X6/packages/")

const classes = project.getSourceFiles().flatMap((sourceFile) =>
  sourceFile.getClasses()
);

const classNames = classes.map((classDecl) => ({
  name: classDecl.getName(),
  fileName: classDecl.getSourceFile().getFilePath(),
}));

console.log(classNames)  //  there log `[]`

why it get an empty array ?

Edit-01

I log the classes, it is empty array, but under the packages, it's the source code, it have thousands of classes.

const classes = project.getSourceFiles().flatMap((sourceFile) =>
  sourceFile.getClasses()
);
console.log("classes: ", classes)  // classes:  []
Solution

  • From the ts-morph document

    you should use addSourceFilesAtPaths:

    //project.addDirectoryAtPath("/Users/john/github_repo/@antv/X6/packages/")
project.addSourceFilesAtPaths("/Users/john/github_repo/@antv/X6/packages/**/*{.d.ts,.ts}");