tslib module import code example

Example 1: add module tslib

// TypeScript 3.9.2 or later
npm install tslib
// TypeScript 3.8.4 or earlier
npm install tslib@^1 
// TypeScript 2.3.2 or earlier 
npm install [email protected]

Example 2: This syntax requires an imported helper named '__spreadArrays' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.

npm install tslib