Cannot find module 'escape-string-regexp'

[deangibson89]

After following the 'Getting started' guide and running yo gulp-webapp I get the following error:

module.js:339
throw err;
^

Error: Cannot find module 'escape-string-regexp'
at Function.Module._resolveFilename (module.js:337:15)
at Function.Module._load (module.js:287:25)
at Module.require (module.js:366:17)
at require (module.js:385:17)
at Object. (/usr/local/lib/node_modules/yo/node_modules/chalk/index.js:2:26)
at Module._compile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Module.require (module.js:366:17)
Deans-Air:deangibson deang$

[sindresorhus]

This is usually a sign of some kind of npm install corruption. Ensure you're on the latest Node.js and npm version ($ npm i -g npm). Then delete the node_modules folder and run $ npm cache clean and then $ npm install. Use the npm issue tracker for support.