Require Node.js 8, return `undefined` instead of `null`, add TypeScript definition#12

Merged

sindresorhus merged 1 commit intosindresorhus:masterfrom BendingBender:typescript-defs

Apr 15, 2019

+76-40

Commits on Apr 13, 2019

Require Node.js 8, return undefined instead of null, add TypeScript definition
BendingBender
committed