sucrase/dist/sucrase-babylon/parser/index.mjs

Super-fast alternative to Babel for when you can target modern JS runtimes

import { getOptions } from "../options";
import StatementParser from "./statement";
export const plugins = {};
export default class Parser extends StatementParser {
    constructor(inputOptions, input) {
        const options = getOptions(inputOptions);
        super(options, input);
        this.options = options;
        this.input = input;
        this.plugins = pluginsMap(this.options.plugins);
        // If enabled, skip leading hashbang line.
        if (this.state.pos === 0 && this.input[0] === "#" && this.input[1] === "!") {
            this.skipLineComment(2);
        }
    }
    parse() {
        this.nextToken();
        return this.parseTopLevel();
    }
}
function pluginsMap(pluginList) {
    const pluginMap = {};
    for (const name of pluginList) {
        pluginMap[name] = true;
    }
    return pluginMap;
}