Method getSourceRootAbsModuleId

tools/isobuild/import-scanner.ts:1416–1471

(absPath: string)

  }

  private getSourceRootAbsModuleId(absPath: string) {
    const relPath = pathRelative(this.sourceRoot, absPath);

    if (relPath.startsWith("..")) {
      // absPath is not a subdirectory of this.sourceRoot.
      return;
    }

    const dirs = relPath.split("/");
    dirs.pop(); // Discard the module's filename.
    while (dirs[0] === "") {
      dirs.shift();
    }

    const isApp = ! this.name;
    const bundlingForWeb = this.isWeb();

    const topLevelDir = dirs[0];
    if (topLevelDir === "private" ||
        topLevelDir === "packages" ||
        topLevelDir === "programs" ||
        topLevelDir === "cordova-build-override") {
      // Don't load anything from these special top-level directories
      return;
    }

    for (let dir of dirs) {
      if (dir.charAt(0) === ".") {
        // Files/directories whose names start with a dot are never loaded
        return;
      }

      if (isApp) {
        if (bundlingForWeb) {
          if (dir === "server") {
            // If we're bundling an app for a client architecture, any files
            // contained by a server-only directory that is not contained by
            // a node_modules directory must be ignored.
            return;
          }
        } else if (dir === "client") {
          // If we're bundling an app for a server architecture, any files
          // contained by a client-only directory that is not contained by
          // a node_modules directory must be ignored.
          return;
        }
      }

      if (dir === "node_modules") {
        // Accept any file within a node_modules directory.
        return ensureLeadingSlash(relPath);
      }
    }

    return ensureLeadingSlash(relPath);
  }

  // Called by this.resolver when a module identifier cannot be resolved.