tokTypes of acorn-jsx will be different TokenType classes if acorn itself is loaded via ESM

[JounQin]

acorn-jsx/index.js

Lines 85 to 91 in de5b1e9

	Object.defineProperty(module.exports, "tokTypes", {
	get: function get_tokTypes() {
	return getJsxTokens(require("acorn")).tokTypes;
	},
	configurable: true,
	enumerable: true
	});

acorn can be loaded as ESM: https://github.com/acornjs/acorn/blob/master/acorn/package.json#L11

But the above codes enforces to load cjs version of acorn, it will cause the problem described as title.

related #112