package creates variable names starting with numbers

[RobertSandiford]

• Version: 2.1.2
• TypeScript Version:
• Operating System and version (if applicable): Win
• Node Version (if applicable): 14

Description

cjstoesm creates invalid variable names beginning with numbers

// input

'use strict' var low = require('./lib/core.js') module.exports = low low.registerLanguage('1c', require('highlight.js/lib/languages/1c')) low.registerLanguage('abnf', require('highlight.js/lib/languages/abnf'))

Actual Behavior

// output

import * as low from "./lib/core.js"; import 1c from "highlight.js/lib/languages/1c"; import abnf from "highlight.js/lib/languages/abnf"; 'use strict'; low.registerLanguage('1c', 1c); low.registerLanguage('abnf', abnf); export default low;

Expected Behavior

// output

import * as low from "./lib/core.js"; import _1c from "highlight.js/lib/languages/1c"; // use underscore for valid var name import abnf from "highlight.js/lib/languages/abnf"; 'use strict'; low.registerLanguage('1c', _1c); low.registerLanguage('abnf', abnf); export default low;