vue hello world项目
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const util = require("util");
const truncateArgs = require("../logging/truncateArgs");
module.exports = ({ colors, appendOnly, stream }) => {
let currentStatusMessage = undefined;
let hasStatusMessage = false;
let currentIndent = "";
let currentCollapsed = 0;
const indent = (str, prefix, colorPrefix, colorSuffix) => {
if (str === "") return str;
prefix = currentIndent + prefix;
if (colors) {
return (
prefix +
colorPrefix +
str.replace(/\n/g, colorSuffix + "\n" + prefix + colorPrefix) +
colorSuffix
);
} else {
return prefix + str.replace(/\n/g, "\n" + prefix);
}
};
const clearStatusMessage = () => {
if (hasStatusMessage) {
stream.write("\x1b[2K\r");
hasStatusMessage = false;
}
};
const writeStatusMessage = () => {
if (!currentStatusMessage) return;
const l = stream.columns;
const args = l
? truncateArgs(currentStatusMessage, l - 1)
: currentStatusMessage;
const str = args.join(" ");
const coloredStr = `\u001b[1m${str}\u001b[39m\u001b[22m`;
stream.write(`\x1b[2K\r${coloredStr}`);
hasStatusMessage = true;
};
const writeColored = (prefix, colorPrefix, colorSuffix) => {
return (...args) => {
if (currentCollapsed > 0) return;
clearStatusMessage();
const str = indent(
util.format(...args),
prefix,
colorPrefix,
colorSuffix
);
stream.write(str + "\n");
writeStatusMessage();
};
};
const writeGroupMessage = writeColored(
"<-> ",
"\u001b[1m\u001b[36m",
"\u001b[39m\u001b[22m"
);
const writeGroupCollapsedMessage = writeColored(
"<+> ",
"\u001b[1m\u001b[36m",
"\u001b[39m\u001b[22m"
);
return {
log: writeColored(" ", "\u001b[1m", "\u001b[22m"),
debug: writeColored(" ", "", ""),
trace: writeColored(" ", "", ""),
info: writeColored("<i> ", "\u001b[1m\u001b[32m", "\u001b[39m\u001b[22m"),
warn: writeColored("<w> ", "\u001b[1m\u001b[33m", "\u001b[39m\u001b[22m"),
error: writeColored("<e> ", "\u001b[1m\u001b[31m", "\u001b[39m\u001b[22m"),
logTime: writeColored(
"<t> ",
"\u001b[1m\u001b[35m",
"\u001b[39m\u001b[22m"
),
group: (...args) => {
writeGroupMessage(...args);
if (currentCollapsed > 0) {
currentCollapsed++;
} else {
currentIndent += " ";
}
},
groupCollapsed: (...args) => {
writeGroupCollapsedMessage(...args);
currentCollapsed++;
},
groupEnd: () => {
if (currentCollapsed > 0) currentCollapsed--;
else if (currentIndent.length >= 2)
currentIndent = currentIndent.slice(0, currentIndent.length - 2);
},
// eslint-disable-next-line node/no-unsupported-features/node-builtins
profile: console.profile && (name => console.profile(name)),
// eslint-disable-next-line node/no-unsupported-features/node-builtins
profileEnd: console.profileEnd && (name => console.profileEnd(name)),
clear:
!appendOnly &&
// eslint-disable-next-line node/no-unsupported-features/node-builtins
console.clear &&
(() => {
clearStatusMessage();
// eslint-disable-next-line node/no-unsupported-features/node-builtins
console.clear();
writeStatusMessage();
}),
status: appendOnly
? writeColored("<s> ", "", "")
: (name, ...args) => {
args = args.filter(Boolean);
if (name === undefined && args.length === 0) {
clearStatusMessage();
currentStatusMessage = undefined;
} else if (
typeof name === "string" &&
name.startsWith("[webpack.Progress] ")
) {
currentStatusMessage = [name.slice(19), ...args];
writeStatusMessage();
} else if (name === "[webpack.Progress]") {
currentStatusMessage = [...args];
writeStatusMessage();
} else {
currentStatusMessage = [name, ...args];
writeStatusMessage();
}
}
};
};