Rough implementation of checking of AST equality: Ignores spaces, comments, quotes, semicolons, parenthesis.
npm i -S typescript-equals
import { equals } from 'typescript-equals';
const text1 = `var a = {a:1}`;
const text2 = `var a = {a:1,}`;
const text3 = `var a = {a: 1} // comment`;
equals(text1, text2); // => true
equals(text1, text3); // => true
equals(text2, text3); // => true
equals(firstText: string, secondText: string): boolean;