@netlify/build/lib/error/parse/clean_stack.js

Netlify build module

import { cwd } from 'process';
import cleanStack from 'clean-stack';
import stripAnsi from 'strip-ansi';
// Clean stack traces:
//  - remove our internal code, e.g. the logic spawning plugins
//  - remove node modules and Node.js internals
//  - strip process.cwd()
//  - remove colors
// Keep non stack trace lines as is.
// We do not use libraries that patch `Error.prepareStackTrace()` because they
// tend to create issues.
export const cleanStacks = function ({ stack, rawStack, debug }) {
    if (stack === undefined) {
        return;
    }
    // Internal errors / bugs keep their full stack trace
    // Same in debug mode
    if (rawStack || debug) {
        return stack;
    }
    return stack.split('\n').reduce(cleanStackLine, '').replace(INITIAL_NEWLINES, '');
};
const cleanStackLine = function (lines, line) {
    const lineA = line.replace(getCwd(), '');
    const lineB = stripAnsi(lineA);
    if (!STACK_LINE_REGEXP.test(lineB)) {
        return `${lines}\n${lineA}`;
    }
    if (shouldRemoveStackLine(lineB)) {
        return lines;
    }
    const lineC = cleanStack(lineB);
    if (lineC === '') {
        return lines;
    }
    return `${lines}\n${lineC}`;
};
// `process.cwd()` can sometimes fail: directory name too long, current
// directory has been removed, access denied.
const getCwd = function () {
    try {
        return cwd();
    }
    catch {
        return '';
    }
};
// Check if a line is part of a stack trace
const STACK_LINE_REGEXP = /^\s+at /;
const shouldRemoveStackLine = function (line) {
    const lineA = normalizePathSlashes(line);
    return INTERNAL_STACK_STRINGS.some((stackString) => lineA.includes(stackString)) || INTERNAL_STACK_REGEXP.test(lineA);
};
const INTERNAL_STACK_STRINGS = [
    // Anonymous function
    '<anonymous>',
    '(index 0)',
    // nyc internal code
    'node_modules/append-transform',
    'node_modules/signal-exit',
    // Node internals
    '(node:',
];
// This is only needed for local builds and tests
const INTERNAL_STACK_REGEXP = /(lib\/|tests\/helpers\/|tests\/.*\/tests.js|node_modules)/;
const INITIAL_NEWLINES = /^\n+/;
const normalizePathSlashes = function (line) {
    return line.replace(BACKLASH_REGEXP, '/');
};
const BACKLASH_REGEXP = /\\/g;