1// Block scoped definitions work poorly for global variables, temporarily enable var 2/* eslint-disable no-var */ 3 4// this will work in the browser via browserify 5declare var assert: typeof _chai.assert; 6declare var expect: typeof _chai.expect; 7var _chai: typeof import("chai") = require("chai"); 8globalThis.assert = _chai.assert; 9{ 10 // chai's builtin `assert.isFalse` is featureful but slow - we don't use those features, 11 // so we'll just overwrite it as an alterative to migrating a bunch of code off of chai 12 assert.isFalse = (expr: any, msg: string) => { if (expr !== false) throw new Error(msg); }; 13 14 const assertDeepImpl = assert.deepEqual; 15 assert.deepEqual = (a, b, msg) => { 16 if (ts.isArray(a) && ts.isArray(b)) { 17 assertDeepImpl(arrayExtraKeysObject(a), arrayExtraKeysObject(b), "Array extra keys differ"); 18 } 19 assertDeepImpl(a, b, msg); 20 21 function arrayExtraKeysObject(a: readonly ({} | null | undefined)[]): object { 22 const obj: { [key: string]: {} | null | undefined } = {}; 23 for (const key in a) { 24 if (Number.isNaN(Number(key))) { 25 obj[key] = a[key]; 26 } 27 } 28 return obj; 29 } 30 }; 31} 32globalThis.expect = _chai.expect; 33/* eslint-enable no-var */ 34// empty ts namespace so this file is included in the `ts.ts` namespace file generated by the module swapover 35// This way, everything that ends up importing `ts` downstream also imports this file and picks up its augmentation 36namespace ts {}