@netlify/config/lib/log/logger.js

Netlify config module

import figures from 'figures';
import { serializeObject } from './serialize.js';
import { THEME } from './theme.js';
export const logsAreBuffered = (logs) => {
    return logs !== undefined && 'stdout' in logs;
};
// When the `buffer` option is true, we return logs instead of printing them
// on the console. The logs are accumulated in a `logs` array variable.
export const getBufferLogs = function ({ buffer }) {
    if (!buffer) {
        return;
    }
    return { stdout: [], stderr: [] };
};
// This should be used instead of `console.log()`
// Printed on stderr because stdout is reserved for the JSON output
export const log = function (logs, string, { color } = {}) {
    const stringA = String(string).replace(EMPTY_LINES_REGEXP, EMPTY_LINE);
    const stringB = color === undefined ? stringA : color(stringA);
    if (logs && logs.outputFlusher) {
        logs.outputFlusher.flush();
    }
    if (logsAreBuffered(logs)) {
        // `logs` is a stateful variable
        logs.stderr.push(stringB);
        return;
    }
    console.warn(stringB);
};
// We need to add a zero width space character in empty lines. Otherwise, the
// buildbot removes those due to a bug: https://github.com/netlify/buildbot/issues/595
const EMPTY_LINES_REGEXP = /^\s*$/gm;
const EMPTY_LINE = '\u{200B}';
export const logWarning = function (logs, string, opts) {
    log(logs, string, { color: THEME.warningLine, ...opts });
};
export const logObject = function (logs, object, opts) {
    log(logs, serializeObject(object), opts);
};
export const logSubHeader = function (logs, string, opts) {
    log(logs, `\n${figures.pointer} ${string}`, { color: THEME.subHeader, ...opts });
};