What causes "Could not find a package.json. Are you in a Node project?" in angular/angular-cli?

cd into the directory containing package.json (usually the repo root) and rerun.

angular/angular-cli · error · Error

Could not find a package.json. Are you in a Node project?

Error message

Could not find a package.json. Are you in a Node project?

What it means

Thrown at the start of building the update plan when no package.json exists at the workspace root (options.workspaceRoot or process.cwd()). ng update requires a Node project root to read dependencies from, so it aborts immediately.

Source

Thrown at packages/angular/cli/src/commands/update/update-resolver.ts:872

        `Please perform the following steps to update:\n` +
        `  1. Manually update the versions for these packages in your catalog configuration file ` +
        `(e.g., pnpm-workspace.yaml or .yarnrc.yml).\n` +
        `  2. Run '${installCmd}' to install the updated versions.\n` +
        `  3. Run the following command(s) from the workspace root to execute the migration schematics:\n` +
        `${migrationCommands}`,
    );
  }
}

export async function resolveUserUpdatePlan(
  options: UpdateResolverOptions,
  packageManager: PackageManager,
  logger: logging.LoggerApi,
): Promise<UpdatePlan> {
  const workspaceRoot = options.workspaceRoot ?? process.cwd();
  const packageJsonPath = path.join(workspaceRoot, 'package.json');
  if (!existsSync(packageJsonPath)) {
    throw new Error('Could not find a package.json. Are you in a Node project?');
  }

  const rawJson = readFileSync(packageJsonPath, 'utf8');
  const packageJsonContent = JSON.parse(rawJson) as PackageManifest;

  const getDependencies = (deps: Record<string, string> | undefined) =>
    Object.entries(deps ?? {}).map(([name, range]) => [name, range] as const);

  const allRawDeps = [
    ...getDependencies(packageJsonContent.dependencies),
    ...getDependencies(packageJsonContent.devDependencies),
    ...getDependencies(packageJsonContent.peerDependencies),
  ];

  const npmDeps = new Map(
    allRawDeps.filter(([name, specifier]) => {
      try {
        return isPkgFromRegistry(name, specifier);

View on GitHub (pinned to bb72145f9a)

Solutions

cd into the directory containing package.json (usually the repo root) and rerun.
Pass the correct root explicitly: ng update --workspace-root /path/to/project.
Create a package.json if this genuinely is a Node project (npm init).
Verify the file exists: ls package.json in the directory you run from.

Example fix

// before
~/projects $ ng update   # no package.json here
// after
cd ~/projects/my-app
ng update

Defensive patterns

Strategy: validation

Validate before calling

import { existsSync } from 'fs';
import { resolve } from 'path';
if (!existsSync(resolve(workspaceRoot ?? process.cwd(), 'package.json'))) {
  throw new Error('Not a Node project root: package.json missing');
}

Try / catch

try {
  await ngUpdate(packages);
} catch (e) {
  if (e.message.includes('Could not find a package.json')) {
    // retry with an explicit workspace root pointing at the project directory
  }
}

Prevention

Run ng update from the directory containing package.json.
Set --workspace-root explicitly in CI scripts.
Never rename or delete package.json while tooling runs.
Check `pwd` when a fresh shell reports odd failures.

When it happens

Trigger: Running `ng update` outside any Node/JavaScript project directory; wrong --workspace-root (or CWD) pointing at an empty folder; package.json deleted or renamed; running from a subdirectory without workspace root detection.

Common situations: Running the command in a fresh terminal opened at the home directory; CI step with incorrect working directory; monorepo where the CLI was invoked from a non-root folder without the workspace flag.

Related errors

AI-assisted analysis of angular/angular-cli@bb72145f9a (2026-08-30). Data as JSON: /api/errors/7d344dd0d0bfbfa1. Report an issue: GitHub.