346 lines
7.8 KiB
JavaScript
346 lines
7.8 KiB
JavaScript
'use strict';
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/* istanbul ignore next - affordance for node v8 */
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if (!String.prototype.trimEnd) {
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String.prototype.trimEnd = function () {
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return this.replace(/[\n\r\s\t]+$/, '')
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}
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}
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const escapeStringRegexp = require('escape-string-regexp');
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const natives = [].concat(
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require('module').builtinModules,
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'bootstrap_node',
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'node'
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).map(n => new RegExp(`(?:\\((?:node:)?${n}(?:\\.js)?:\\d+:\\d+\\)$|^\\s*at (?:node:)?${n}(?:\\.js)?:\\d+:\\d+$)`));
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natives.push(
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/\((?:node:)?internal\/[^:]+:\d+:\d+\)$/,
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/\s*at (?:node:)?internal\/[^:]+:\d+:\d+$/,
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/\/\.node-spawn-wrap-\w+-\w+\/node:\d+:\d+\)?$/
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);
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class StackUtils {
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constructor (opts) {
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opts = Object.assign({}, {
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ignoredPackages: []
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}, opts);
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if ('internals' in opts === false) {
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opts.internals = StackUtils.nodeInternals();
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}
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if ('cwd' in opts === false) {
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opts.cwd = process.cwd()
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}
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this._cwd = opts.cwd.replace(/\\/g, '/');
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this._internals = [].concat(
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opts.internals,
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ignoredPackagesRegExp(opts.ignoredPackages)
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);
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this._wrapCallSite = opts.wrapCallSite || false;
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}
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static nodeInternals () {
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return natives.slice();
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}
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clean (stack, indent) {
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indent = indent || 0
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indent = ' '.repeat(indent);
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if (!Array.isArray(stack)) {
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stack = stack.split('\n');
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}
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if (!(/^\s*at /.test(stack[0])) && (/^\s*at /.test(stack[1]))) {
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stack = stack.slice(1);
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}
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let outdent = false;
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let lastNonAtLine = null;
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const result = [];
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stack.forEach(st => {
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st = st.replace(/\\/g, '/');
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if (this._internals.some(internal => internal.test(st))) {
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return;
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}
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const isAtLine = /^\s*at /.test(st);
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if (outdent) {
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st = st.trimEnd().replace(/^(\s+)at /, '$1');
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} else {
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st = st.trim();
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if (isAtLine) {
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st = st.slice(3);
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}
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}
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st = st.replace(`${this._cwd}/`, '');
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if (st) {
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if (isAtLine) {
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if (lastNonAtLine) {
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result.push(lastNonAtLine);
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lastNonAtLine = null;
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}
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result.push(st);
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} else {
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outdent = true;
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lastNonAtLine = st;
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}
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}
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});
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return result.map(line => `${indent}${line}\n`).join('');
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}
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captureString (limit, fn) {
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fn = fn || this.captureString
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if (typeof limit === 'function') {
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fn = limit;
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limit = Infinity;
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}
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const stackTraceLimit = Error.stackTraceLimit;
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if (limit) {
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Error.stackTraceLimit = limit;
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}
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const obj = {};
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Error.captureStackTrace(obj, fn);
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const stack = obj.stack;
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Error.stackTraceLimit = stackTraceLimit;
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return this.clean(stack);
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}
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capture (limit, fn) {
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fn = fn || this.capture
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if (typeof limit === 'function') {
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fn = limit;
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limit = Infinity;
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}
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const prepareStackTrace = Error.prepareStackTrace
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const stackTraceLimit = Error.stackTraceLimit
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Error.prepareStackTrace = (obj, site) => {
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if (this._wrapCallSite) {
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return site.map(this._wrapCallSite);
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}
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return site;
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};
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if (limit) {
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Error.stackTraceLimit = limit;
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}
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const obj = {};
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Error.captureStackTrace(obj, fn);
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const stack = obj.stack;
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Object.assign(Error, {prepareStackTrace, stackTraceLimit});
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return stack;
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}
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at (fn) {
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fn = fn || this.at
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const site = this.capture(1, fn)[0];
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if (!site) {
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return {};
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}
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const res = {
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line: site.getLineNumber(),
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column: site.getColumnNumber()
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};
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setFile(res, site.getFileName(), this._cwd);
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if (site.isConstructor()) {
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res.constructor = true;
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}
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if (site.isEval()) {
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res.evalOrigin = site.getEvalOrigin();
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}
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// Node v10 stopped with the isNative() on callsites, apparently
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/* istanbul ignore next */
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if (site.isNative()) {
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res.native = true;
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}
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let typename;
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try {
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typename = site.getTypeName();
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} catch (_) {
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}
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if (typename && typename !== 'Object' && typename !== '[object Object]') {
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res.type = typename;
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}
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const fname = site.getFunctionName();
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if (fname) {
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res.function = fname;
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}
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const meth = site.getMethodName();
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if (meth && fname !== meth) {
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res.method = meth;
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}
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return res;
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}
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parseLine (line) {
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const match = line && line.match(re);
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if (!match) {
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return null;
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}
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const ctor = match[1] === 'new';
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let fname = match[2];
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const evalOrigin = match[3];
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const evalFile = match[4];
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const evalLine = Number(match[5]);
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const evalCol = Number(match[6]);
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let file = match[7];
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const lnum = match[8];
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const col = match[9];
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const native = match[10] === 'native';
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const closeParen = match[11] === ')';
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let method;
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const res = {};
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if (lnum) {
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res.line = Number(lnum);
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}
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if (col) {
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res.column = Number(col);
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}
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if (closeParen && file) {
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// make sure parens are balanced
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// if we have a file like "asdf) [as foo] (xyz.js", then odds are
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// that the fname should be += " (asdf) [as foo]" and the file
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// should be just "xyz.js"
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// walk backwards from the end to find the last unbalanced (
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let closes = 0;
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for (let i = file.length - 1; i > 0; i--) {
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if (file.charAt(i) === ')') {
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closes++;
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} else if (file.charAt(i) === '(' && file.charAt(i - 1) === ' ') {
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closes--;
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if (closes === -1 && file.charAt(i - 1) === ' ') {
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const before = file.slice(0, i - 1);
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const after = file.slice(i + 1);
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file = after;
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fname += ` (${before}`;
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break;
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}
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}
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}
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}
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if (fname) {
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const methodMatch = fname.match(methodRe);
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if (methodMatch) {
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fname = methodMatch[1];
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method = methodMatch[2];
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}
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}
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setFile(res, file, this._cwd);
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if (ctor) {
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res.constructor = true;
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}
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if (evalOrigin) {
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res.evalOrigin = evalOrigin;
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res.evalLine = evalLine;
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res.evalColumn = evalCol;
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res.evalFile = evalFile && evalFile.replace(/\\/g, '/');
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}
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if (native) {
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res.native = true;
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}
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if (fname) {
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res.function = fname;
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}
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if (method && fname !== method) {
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res.method = method;
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}
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return res;
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}
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}
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function setFile (result, filename, cwd) {
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if (filename) {
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filename = filename.replace(/\\/g, '/');
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if (filename.startsWith(`${cwd}/`)) {
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filename = filename.slice(cwd.length + 1);
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}
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result.file = filename;
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}
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}
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function ignoredPackagesRegExp(ignoredPackages) {
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if (ignoredPackages.length === 0) {
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return [];
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}
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const packages = ignoredPackages.map(mod => escapeStringRegexp(mod));
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return new RegExp(`[\/\\\\]node_modules[\/\\\\](?:${packages.join('|')})[\/\\\\][^:]+:\\d+:\\d+`)
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}
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const re = new RegExp(
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'^' +
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// Sometimes we strip out the ' at' because it's noisy
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'(?:\\s*at )?' +
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// $1 = ctor if 'new'
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'(?:(new) )?' +
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// $2 = function name (can be literally anything)
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// May contain method at the end as [as xyz]
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'(?:(.*?) \\()?' +
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// (eval at <anonymous> (file.js:1:1),
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// $3 = eval origin
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// $4:$5:$6 are eval file/line/col, but not normally reported
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'(?:eval at ([^ ]+) \\((.+?):(\\d+):(\\d+)\\), )?' +
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// file:line:col
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// $7:$8:$9
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// $10 = 'native' if native
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'(?:(.+?):(\\d+):(\\d+)|(native))' +
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// maybe close the paren, then end
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// if $11 is ), then we only allow balanced parens in the filename
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// any imbalance is placed on the fname. This is a heuristic, and
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// bound to be incorrect in some edge cases. The bet is that
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// having weird characters in method names is more common than
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// having weird characters in filenames, which seems reasonable.
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'(\\)?)$'
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);
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const methodRe = /^(.*?) \[as (.*?)\]$/;
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module.exports = StackUtils;
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