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to-console.js
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to-console.js
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'use strict';
var messages = require('@gulpjs/messages');
/* istanbul ignore next */
function noop() {}
function toConsole(log, opts, translate) {
// Return immediately if logging is
// not desired.
if (opts.tasksSimple || opts.tasksJson || opts.help || opts.version || opts.silent) {
// Keep from crashing process when silent.
log.on('error', noop);
return function () {
log.removeListener('error', noop);
};
}
// Default loglevel to info level (3).
var loglevel = opts.logLevel || 3;
var deprecatedPrinted = false;
log.on('deprecated', onDeprecated);
// -L: Logs error events.
if (loglevel > 0) {
log.on('error', onError);
}
// -LL: Logs warn and error events.
if (loglevel > 1) {
log.on('warn', onWarn);
}
// -LLL: Logs info, warn and error events.
if (loglevel > 2) {
log.on('info', onInfo);
}
if (loglevel > 3) {
log.on('debug', onDebug);
}
return function () {
log.removeListener('deprecated', onDeprecated);
log.removeListener('error', onError);
log.removeListener('warn', onWarn);
log.removeListener('info', onInfo);
log.removeListener('debug', onDebug);
};
function onDeprecated() {
if (!deprecatedPrinted) {
var msg = { tag: messages.GULPLOG_DEPRECATED };
// Get message and timestamp before printing anything to avoid
// logging a half message if there's an error in one of them
var message = translate.message(msg);
var timestamp = translate.timestamp(msg);
if (message) {
// Ensure timestamp is not written without a message
if (timestamp) {
process.stderr.write(timestamp + ' ');
}
console.error(message);
}
deprecatedPrinted = true;
}
}
function onError(msg) {
// Get message and timestamp before printing anything to avoid
// logging a half message if there's an error in one of them
var message = translate.message(msg);
var timestamp = translate.timestamp(msg);
if (message) {
// Ensure timestamp is not written without a message
if (timestamp) {
process.stderr.write(timestamp + ' ');
}
console.error(message);
}
}
// onWarn, onInfo, and onDebug are currently all the same
// implementation but separated to change independently
function onWarn(msg) {
// Get message and timestamp before printing anything to avoid
// logging a half message if there's an error in one of them
var message = translate.message(msg);
var timestamp = translate.timestamp(msg);
if (message) {
// Ensure timestamp is not written without a message
if (timestamp) {
process.stdout.write(timestamp + ' ');
}
console.log(message);
}
}
function onInfo(msg) {
// Get message and timestamp before printing anything to avoid
// logging a half message if there's an error in one of them
var message = translate.message(msg);
var timestamp = translate.timestamp(msg);
if (message) {
// Ensure timestamp is not written without a message
if (timestamp) {
process.stdout.write(timestamp + ' ');
}
console.log(message);
}
}
function onDebug(msg) {
// Get message and timestamp before printing anything to avoid
// logging a half message if there's an error in one of them
var message = translate.message(msg);
var timestamp = translate.timestamp(msg);
if (message) {
// Ensure timestamp is not written without a message
if (timestamp) {
process.stdout.write(timestamp + ' ');
}
console.log(message);
}
}
}
module.exports = toConsole;