var esprima = require('esprima') var escodegen = require('escodegen') content = "function _0x355d23(_0x450614) {\ if (('' + _0x450614 / _0x450614)[_0x55f3('0x1c', '\x56\x32\x4b\x45')] !== 0x1 || _0x450614 % 0x14 === 0x0) {\ (function() {}\ [_0x55f3('0x1d', '\x43\x4e\x55\x59')]((undefined + '')[0x2] + (!![] + '')[0x3] + ([][_0x55f3('0x1e', '\x77\x38\x50\x52')]() + '')[0x2] + (undefined + '')[0x0] + (![] + [0x0] + String)[0x14] + (![] + [0x0] + String)[0x14] + (!![] + '')[0x3] + (!![] + '')[0x1])());\ } else {\ (function() {}\ ['\x63\x6f\x6e\x73\x74\x72\x75\x63\x74\x6f\x72']((undefined + '')[0x2] + (!![] + '')[0x3] + ([][_0x55f3('0x1f', '\x4c\x24\x28\x44')]() + '')[0x2] + (undefined + '')[0x0] + (![] + [0x0] + String)[0x14] + (![] + [0x0] + String)[0x14] + (!![] + '')[0x3] + (!![] + '')[0x1])());\ }\ _0x355d23(++_0x450614);\ }" function formatJS(){ //context是要格式的js var ast=esprima.parseScript(content.toString()); var ast_to_json=JSON.stringify(ast); console.log(ast_to_json); var ast1=JSON.parse(ast_to_json); var code=escodegen.generate(ast1); console.log(code); return code; } formatJS()