ce4c83ff
 wxy
初始提交
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'use strict';
const colors = require('./utils/colors');
const chalk = require('chalk');
const stringWidth = require('string-width');
const readline = require('readline');
class Debugger {
constructor () {
this.enabled = true;
this.capturing = false;
this.capturedMessages = [];
}
enable () {
this.enabled = true;
}
capture () {
this.enabled = true;
this.capturing = true;
}
endCapture () {
this.enabled = false;
this.capturing = false;
this.capturedMessages = [];
}
log () {
if (this.enabled) {
this.captureConsole(Array.from(arguments), console.log);
}
}
info (message) {
if (this.enabled) {
const titleFormatted = colors.formatTitle('info', 'I');
this.log(titleFormatted, message);
}
}
note (message) {
if (this.enabled) {
const titleFormatted = colors.formatTitle('note', 'N');
this.log(titleFormatted, message);
}
}
title (severity, title, subtitle) {
if (this.enabled) {
const date = new Date();
const dateString = chalk.grey(date.toLocaleTimeString());
const titleFormatted = colors.formatTitle(severity, title);
const subTitleFormatted = colors.formatText(severity, subtitle);
const message = `${titleFormatted} ${subTitleFormatted}`
// In test environment we don't include timestamp
if(process.env.NODE_ENV === 'test') {
this.log(message);
this.log();
return;
}
// Make timestamp appear at the end of the line
let logSpace = process.stdout.columns - stringWidth(message) - stringWidth(dateString)
if (logSpace <= 0) {
logSpace = 10
}
this.log(`${message}${' '.repeat(logSpace)}${dateString}`);
this.log();
}
}
clearConsole () {
if (!this.capturing && this.enabled && process.stdout.isTTY) {
// Fill screen with blank lines. Then move to 0 (beginning of visible part) and clear it
const blank = '\n'.repeat(process.stdout.rows)
console.log(blank)
readline.cursorTo(process.stdout, 0, 0)
readline.clearScreenDown(process.stdout)
}
}
captureLogs (fun) {
try {
this.capture();
fun.call();
return this.capturedMessages;
} catch (e) {
throw e;
} finally {
this.endCapture();
}
}
captureConsole (args, method) {
if (this.capturing) {
this.capturedMessages.push(chalk.stripColor(args.join(' ')).trim());
} else {
method.apply(console, args);
}
}
}
function capitalizeFirstLetter (string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
module.exports = new Debugger();
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