vue hello world项目
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3 years ago
'use strict';
const toString = Object.prototype.toString;
const colors = require('ansi-colors');
let called = false;
let fns = [];
const complements = {
'yellow': 'blue',
'cyan': 'red',
'green': 'magenta',
'black': 'white',
'blue': 'yellow',
'red': 'cyan',
'magenta': 'green',
'white': 'black'
};
exports.longest = (arr, prop) => {
return arr.reduce((a, v) => Math.max(a, prop ? v[prop].length : v.length), 0);
};
exports.hasColor = str => !!str && colors.hasColor(str);
const isObject = exports.isObject = val => {
return val !== null && typeof val === 'object' && !Array.isArray(val);
};
exports.nativeType = val => {
return toString.call(val).slice(8, -1).toLowerCase().replace(/\s/g, '');
};
exports.isAsyncFn = val => {
return exports.nativeType(val) === 'asyncfunction';
};
exports.isPrimitive = val => {
return val != null && typeof val !== 'object' && typeof val !== 'function';
};
exports.resolve = (context, value, ...rest) => {
if (typeof value === 'function') {
return value.call(context, ...rest);
}
return value;
};
exports.scrollDown = (choices = []) => [...choices.slice(1), choices[0]];
exports.scrollUp = (choices = []) => [choices.pop(), ...choices];
exports.reorder = (arr = []) => {
let res = arr.slice();
res.sort((a, b) => {
if (a.index > b.index) return 1;
if (a.index < b.index) return -1;
return 0;
});
return res;
};
exports.swap = (arr, index, pos) => {
let len = arr.length;
let idx = pos === len ? 0 : pos < 0 ? len - 1 : pos;
let choice = arr[index];
arr[index] = arr[idx];
arr[idx] = choice;
};
exports.width = (stream, fallback = 80) => {
let columns = (stream && stream.columns) ? stream.columns : fallback;
if (stream && typeof stream.getWindowSize === 'function') {
columns = stream.getWindowSize()[0];
}
if (process.platform === 'win32') {
return columns - 1;
}
return columns;
};
exports.height = (stream, fallback = 20) => {
let rows = (stream && stream.rows) ? stream.rows : fallback;
if (stream && typeof stream.getWindowSize === 'function') {
rows = stream.getWindowSize()[1];
}
return rows;
};
exports.wordWrap = (str, options = {}) => {
if (!str) return str;
if (typeof options === 'number') {
options = { width: options };
}
let { indent = '', newline = ('\n' + indent), width = 80 } = options;
let spaces = (newline + indent).match(/[^\S\n]/g) || [];
width -= spaces.length;
let source = `.{1,${width}}([\\s\\u200B]+|$)|[^\\s\\u200B]+?([\\s\\u200B]+|$)`;
let output = str.trim();
let regex = new RegExp(source, 'g');
let lines = output.match(regex) || [];
lines = lines.map(line => line.replace(/\n$/, ''));
if (options.padEnd) lines = lines.map(line => line.padEnd(width, ' '));
if (options.padStart) lines = lines.map(line => line.padStart(width, ' '));
return indent + lines.join(newline);
};
exports.unmute = color => {
let name = color.stack.find(n => colors.keys.color.includes(n));
if (name) {
return colors[name];
}
let bg = color.stack.find(n => n.slice(2) === 'bg');
if (bg) {
return colors[name.slice(2)];
}
return str => str;
};
exports.pascal = str => str ? str[0].toUpperCase() + str.slice(1) : '';
exports.inverse = color => {
if (!color || !color.stack) return color;
let name = color.stack.find(n => colors.keys.color.includes(n));
if (name) {
let col = colors['bg' + exports.pascal(name)];
return col ? col.black : color;
}
let bg = color.stack.find(n => n.slice(0, 2) === 'bg');
if (bg) {
return colors[bg.slice(2).toLowerCase()] || color;
}
return colors.none;
};
exports.complement = color => {
if (!color || !color.stack) return color;
let name = color.stack.find(n => colors.keys.color.includes(n));
let bg = color.stack.find(n => n.slice(0, 2) === 'bg');
if (name && !bg) {
return colors[complements[name] || name];
}
if (bg) {
let lower = bg.slice(2).toLowerCase();
let comp = complements[lower];
if (!comp) return color;
return colors['bg' + exports.pascal(comp)] || color;
}
return colors.none;
};
exports.meridiem = date => {
let hours = date.getHours();
let minutes = date.getMinutes();
let ampm = hours >= 12 ? 'pm' : 'am';
hours = hours % 12;
let hrs = hours === 0 ? 12 : hours;
let min = minutes < 10 ? '0' + minutes : minutes;
return hrs + ':' + min + ' ' + ampm;
};
/**
* Set a value on the given object.
* @param {Object} obj
* @param {String} prop
* @param {any} value
*/
exports.set = (obj = {}, prop = '', val) => {
return prop.split('.').reduce((acc, k, i, arr) => {
let value = arr.length - 1 > i ? (acc[k] || {}) : val;
if (!exports.isObject(value) && i < arr.length - 1) value = {};
return (acc[k] = value);
}, obj);
};
/**
* Get a value from the given object.
* @param {Object} obj
* @param {String} prop
*/
exports.get = (obj = {}, prop = '', fallback) => {
let value = obj[prop] == null
? prop.split('.').reduce((acc, k) => acc && acc[k], obj)
: obj[prop];
return value == null ? fallback : value;
};
exports.mixin = (target, b) => {
if (!isObject(target)) return b;
if (!isObject(b)) return target;
for (let key of Object.keys(b)) {
let desc = Object.getOwnPropertyDescriptor(b, key);
if (desc.hasOwnProperty('value')) {
if (target.hasOwnProperty(key) && isObject(desc.value)) {
let existing = Object.getOwnPropertyDescriptor(target, key);
if (isObject(existing.value)) {
target[key] = exports.merge({}, target[key], b[key]);
} else {
Reflect.defineProperty(target, key, desc);
}
} else {
Reflect.defineProperty(target, key, desc);
}
} else {
Reflect.defineProperty(target, key, desc);
}
}
return target;
};
exports.merge = (...args) => {
let target = {};
for (let ele of args) exports.mixin(target, ele);
return target;
};
exports.mixinEmitter = (obj, emitter) => {
let proto = emitter.constructor.prototype;
for (let key of Object.keys(proto)) {
let val = proto[key];
if (typeof val === 'function') {
exports.define(obj, key, val.bind(emitter));
} else {
exports.define(obj, key, val);
}
}
};
exports.onExit = callback => {
const onExit = (quit, code) => {
if (called) return;
called = true;
fns.forEach(fn => fn());
if (quit === true) {
process.exit(128 + code);
}
};
if (fns.length === 0) {
process.once('SIGTERM', onExit.bind(null, true, 15));
process.once('SIGINT', onExit.bind(null, true, 2));
process.once('exit', onExit);
}
fns.push(callback);
};
exports.define = (obj, key, value) => {
Reflect.defineProperty(obj, key, { value });
};
exports.defineExport = (obj, key, fn) => {
let custom;
Reflect.defineProperty(obj, key, {
enumerable: true,
configurable: true,
set(val) {
custom = val;
},
get() {
return custom ? custom() : fn();
}
});
};