Function detectSourceFolder

packages/core/src/utils/AbstractMigrator.ts:491–512

* Checks if `src` folder exists, it so, tries to adjust the migrations and seeders paths automatically to use it. * If there is a `dist` or `build` folder, it will be used for the JS variant (`path` option), while the `src` folder will be * used for the TS variant (`pathTs` option). * *

(fs: { pathExists(path: string): boolean })

   * break existing projects, only help with the new ones.
   */
  private detectSourceFolder(fs: { pathExists(path: string): boolean }): void {
    const baseDir = this.config.get('baseDir');
    const defaultPath = './migrations';

    if (!fs.pathExists(baseDir + '/src')) {
      this.options.path ??= defaultPath;
      return;
    }

    const exists = fs.pathExists(`${baseDir}/${defaultPath}`);
    const distDir = fs.pathExists(baseDir + '/dist');
    const buildDir = fs.pathExists(baseDir + '/build');
    // if neither `dist` nor `build` exist, we use the `src` folder as it might be a JS project without building, but with `src` folder
    /* v8 ignore next */
    const path = distDir ? './dist' : buildDir ? './build' : './src';

    // only if the user did not provide any values and if the default path does not exist
    if (!this.options.path && !this.options.pathTs && !exists) {
      this.options.path = `${path}/migrations`;
      this.options.pathTs = './src/migrations';
    }
  }

  private registerDefaultListeners(): void {
    /* v8 ignore else */