What lifecycle method should be used to run package installations after files are written?

• A. install phase (this.npmInstall() or this.yarnInstall())
• B. post-write phase
• C. pre-write phase
• D. run phase

Answer: (A)

In Yeoman, use the install phase to run package managers after your files are written. Once the writing step completes and the project scaffold (including package.json) is in place, you call this.npmInstall() or this.yarnInstall() inside the install phase to install dependencies. This sequencing ensures dependencies are added only after the project structure exists, keeping installation clean and reliable. The ideas of pre-write or post-write aren’t official Yeoman lifecycle stages, and there isn’t a run phase, so the install phase is the appropriate place for package installation. If needed, you can skip installation with a skipInstall option.