package.json: Engines & engineStrict - And How to Use Them

I’ve been diving into io.js recently for reasons that will soon become clear. In doing so, I’ve used my favorite Node version manager, Node Version Manager, to handle different versions of Node.js and io.js. Switching between versions is straightforward, but occasionally I end up running code on a version of Node/io.js that the code doesn’t support. For instance, running EcmaScript 6 let statement

[amagitakayosi]

package.jsonでnodeのバージョン指定するの厳しい感じだった