refactor: add additional check for package.json dependencies

Author: sis0k0

projectHelpers.js

@@ -4,15 +4,19 @@ const fs = require("fs");
 const isTypeScript = ({projectDir, packageJson} = {}) => {
  packageJson = packageJson || getPackageJson(projectDir);
 
- return packageJson.dependencies.hasOwnProperty("typescript") ||
- packageJson.devDependencies.hasOwnProperty("typescript") ||
- isAngular({packageJson});
+ return (
+ packageJson.dependencies &&
+ packageJson.dependencies.hasOwnProperty("typescript")
+ ) || (
+ packageJson.devDependencies &&
+ packageJson.devDependencies.hasOwnProperty("typescript")
+ ) || isAngular({packageJson});
 };
 
 const isAngular = ({projectDir, packageJson} = {}) => {
  packageJson = packageJson || getPackageJson(projectDir);
 
- return Object.keys(packageJson.dependencies)
+ return packageJson.dependencies && Object.keys(packageJson.dependencies)
  .some(dependency => /^@angular\b/.test(dependency));
 };