import {basename} from “path” import {readFileSync as readFile} from “fs” import * as acorn from “acorn”
let infile, forceFile, silent = false, compact = false, tokenize = false const options = {}
function help(status) {
const print = (status == 0) ? console.log : console.error print("usage: " + basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|...|--ecma2015|--ecma2016|...]") print(" [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]") process.exit(status)
}
for (let i = 2; i < process.argv.length; ++i) {
const arg = process.argv[i] if ((arg == "-" || arg[0] != "-") && !infile) infile = arg else if (arg == "--" && !infile && i + 2 == process.argv.length) forceFile = infile = process.argv[++i] else if (arg == "--locations") options.locations = true else if (arg == "--allow-hash-bang") options.allowHashBang = true else if (arg == "--silent") silent = true else if (arg == "--compact") compact = true else if (arg == "--help") help(0) else if (arg == "--tokenize") tokenize = true else if (arg == "--module") options.sourceType = 'module' else { let match = arg.match(/^--ecma(\d+)$/) if (match) options.ecmaVersion = +match[1] else help(1) }
}
function run(code) {
let result if (!tokenize) { try { result = acorn.parse(code, options) } catch(e) { console.error(e.message); process.exit(1) } } else { result = [] let tokenizer = acorn.tokenizer(code, options), token while (true) { try { token = tokenizer.getToken() } catch(e) { console.error(e.message); process.exit(1) } result.push(token) if (token.type == acorn.tokTypes.eof) break } } if (!silent) console.log(JSON.stringify(result, null, compact ? null : 2))
}
if (forceFile || infile && infile != “-”) {
run(readFile(infile, "utf8"))
} else {
let code = "" process.stdin.resume() process.stdin.on("data", chunk => code += chunk) process.stdin.on("end", () => run(code))
}