Method getPkgJsonSubsetForDir

tools/isobuild/resolver.ts:374–405

(dirPath: string)

  }

  private getPkgJsonSubsetForDir(dirPath: string) {
    const pkgJsonPath = pathJoin(dirPath, "package.json");
    const pkg = optimisticReadJsonOrNull(pkgJsonPath);
    if (! pkg) {
      return null;
    }

    // Output a JS module that exports just the "name", "version", "main",
    // and "browser" properties (if defined) from the package.json file.
    const pkgSubset: Partial<typeof pkg> = {};

    if (has(pkg, "name")) {
      pkgSubset.name = pkg.name;
    }

    if (has(pkg, "version")) {
      pkgSubset.version = pkg.version;
    }

    this.mainFields.forEach(name => {
      const value = pkg[name];
      if (isString(value) ||
          isObject(value)) {
        pkgSubset[name] = value;
      }
    });

    return {
      path: pkgJsonPath,
      pkg: pkgSubset,
    };
  }

  private findPkgJsonSubsetForPath(
    path: string,