@iicoding/utils
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Browser 端 - 类型判断 - 类似 koa 的异步compose - sleep - 扩展对象属性 - 扩展 storage 对象功能
274 lines (261 loc) • 20.5 kB
JavaScript
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
var _excluded = ["quality", "width", "height", "compressionSize"];
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
function _regeneratorRuntime() { "use strict"; /*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */ _regeneratorRuntime = function _regeneratorRuntime() { return e; }; var t, e = {}, r = Object.prototype, n = r.hasOwnProperty, o = Object.defineProperty || function (t, e, r) { t[e] = r.value; }, i = "function" == typeof Symbol ? Symbol : {}, a = i.iterator || "@@iterator", c = i.asyncIterator || "@@asyncIterator", u = i.toStringTag || "@@toStringTag"; function define(t, e, r) { return Object.defineProperty(t, e, { value: r, enumerable: !0, configurable: !0, writable: !0 }), t[e]; } try { define({}, ""); } catch (t) { define = function define(t, e, r) { return t[e] = r; }; } function wrap(t, e, r, n) { var i = e && e.prototype instanceof Generator ? e : Generator, a = Object.create(i.prototype), c = new Context(n || []); return o(a, "_invoke", { value: makeInvokeMethod(t, r, c) }), a; } function tryCatch(t, e, r) { try { return { type: "normal", arg: t.call(e, r) }; } catch (t) { return { type: "throw", arg: t }; } } e.wrap = wrap; var h = "suspendedStart", l = "suspendedYield", f = "executing", s = "completed", y = {}; function Generator() {} function GeneratorFunction() {} function GeneratorFunctionPrototype() {} var p = {}; define(p, a, function () { return this; }); var d = Object.getPrototypeOf, v = d && d(d(values([]))); v && v !== r && n.call(v, a) && (p = v); var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p); function defineIteratorMethods(t) { ["next", "throw", "return"].forEach(function (e) { define(t, e, function (t) { return this._invoke(e, t); }); }); } function AsyncIterator(t, e) { function invoke(r, o, i, a) { var c = tryCatch(t[r], t, o); if ("throw" !== c.type) { var u = c.arg, h = u.value; return h && "object" == _typeof(h) && n.call(h, "__await") ? e.resolve(h.__await).then(function (t) { invoke("next", t, i, a); }, function (t) { invoke("throw", t, i, a); }) : e.resolve(h).then(function (t) { u.value = t, i(u); }, function (t) { return invoke("throw", t, i, a); }); } a(c.arg); } var r; o(this, "_invoke", { value: function value(t, n) { function callInvokeWithMethodAndArg() { return new e(function (e, r) { invoke(t, n, e, r); }); } return r = r ? r.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg(); } }); } function makeInvokeMethod(e, r, n) { var o = h; return function (i, a) { if (o === f) throw new Error("Generator is already running"); if (o === s) { if ("throw" === i) throw a; return { value: t, done: !0 }; } for (n.method = i, n.arg = a;;) { var c = n.delegate; if (c) { var u = maybeInvokeDelegate(c, n); if (u) { if (u === y) continue; return u; } } if ("next" === n.method) n.sent = n._sent = n.arg;else if ("throw" === n.method) { if (o === h) throw o = s, n.arg; n.dispatchException(n.arg); } else "return" === n.method && n.abrupt("return", n.arg); o = f; var p = tryCatch(e, r, n); if ("normal" === p.type) { if (o = n.done ? s : l, p.arg === y) continue; return { value: p.arg, done: n.done }; } "throw" === p.type && (o = s, n.method = "throw", n.arg = p.arg); } }; } function maybeInvokeDelegate(e, r) { var n = r.method, o = e.iterator[n]; if (o === t) return r.delegate = null, "throw" === n && e.iterator.return && (r.method = "return", r.arg = t, maybeInvokeDelegate(e, r), "throw" === r.method) || "return" !== n && (r.method = "throw", r.arg = new TypeError("The iterator does not provide a '" + n + "' method")), y; var i = tryCatch(o, e.iterator, r.arg); if ("throw" === i.type) return r.method = "throw", r.arg = i.arg, r.delegate = null, y; var a = i.arg; return a ? a.done ? (r[e.resultName] = a.value, r.next = e.nextLoc, "return" !== r.method && (r.method = "next", r.arg = t), r.delegate = null, y) : a : (r.method = "throw", r.arg = new TypeError("iterator result is not an object"), r.delegate = null, y); } function pushTryEntry(t) { var e = { tryLoc: t[0] }; 1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e); } function resetTryEntry(t) { var e = t.completion || {}; e.type = "normal", delete e.arg, t.completion = e; } function Context(t) { this.tryEntries = [{ tryLoc: "root" }], t.forEach(pushTryEntry, this), this.reset(!0); } function values(e) { if (e || "" === e) { var r = e[a]; if (r) return r.call(e); if ("function" == typeof e.next) return e; if (!isNaN(e.length)) { var o = -1, i = function next() { for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next; return next.value = t, next.done = !0, next; }; return i.next = i; } } throw new TypeError(_typeof(e) + " is not iterable"); } return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", { value: GeneratorFunctionPrototype, configurable: !0 }), o(GeneratorFunctionPrototype, "constructor", { value: GeneratorFunction, configurable: !0 }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, u, "GeneratorFunction"), e.isGeneratorFunction = function (t) { var e = "function" == typeof t && t.constructor; return !!e && (e === GeneratorFunction || "GeneratorFunction" === (e.displayName || e.name)); }, e.mark = function (t) { return Object.setPrototypeOf ? Object.setPrototypeOf(t, GeneratorFunctionPrototype) : (t.__proto__ = GeneratorFunctionPrototype, define(t, u, "GeneratorFunction")), t.prototype = Object.create(g), t; }, e.awrap = function (t) { return { __await: t }; }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () { return this; }), e.AsyncIterator = AsyncIterator, e.async = function (t, r, n, o, i) { void 0 === i && (i = Promise); var a = new AsyncIterator(wrap(t, r, n, o), i); return e.isGeneratorFunction(r) ? a : a.next().then(function (t) { return t.done ? t.value : a.next(); }); }, defineIteratorMethods(g), define(g, u, "Generator"), define(g, a, function () { return this; }), define(g, "toString", function () { return "[object Generator]"; }), e.keys = function (t) { var e = Object(t), r = []; for (var n in e) r.push(n); return r.reverse(), function next() { for (; r.length;) { var t = r.pop(); if (t in e) return next.value = t, next.done = !1, next; } return next.done = !0, next; }; }, e.values = values, Context.prototype = { constructor: Context, reset: function reset(e) { if (this.prev = 0, this.next = 0, this.sent = this._sent = t, this.done = !1, this.delegate = null, this.method = "next", this.arg = t, this.tryEntries.forEach(resetTryEntry), !e) for (var r in this) "t" === r.charAt(0) && n.call(this, r) && !isNaN(+r.slice(1)) && (this[r] = t); }, stop: function stop() { this.done = !0; var t = this.tryEntries[0].completion; if ("throw" === t.type) throw t.arg; return this.rval; }, dispatchException: function dispatchException(e) { if (this.done) throw e; var r = this; function handle(n, o) { return a.type = "throw", a.arg = e, r.next = n, o && (r.method = "next", r.arg = t), !!o; } for (var o = this.tryEntries.length - 1; o >= 0; --o) { var i = this.tryEntries[o], a = i.completion; if ("root" === i.tryLoc) return handle("end"); if (i.tryLoc <= this.prev) { var c = n.call(i, "catchLoc"), u = n.call(i, "finallyLoc"); if (c && u) { if (this.prev < i.catchLoc) return handle(i.catchLoc, !0); if (this.prev < i.finallyLoc) return handle(i.finallyLoc); } else if (c) { if (this.prev < i.catchLoc) return handle(i.catchLoc, !0); } else { if (!u) throw new Error("try statement without catch or finally"); if (this.prev < i.finallyLoc) return handle(i.finallyLoc); } } } }, abrupt: function abrupt(t, e) { for (var r = this.tryEntries.length - 1; r >= 0; --r) { var o = this.tryEntries[r]; if (o.tryLoc <= this.prev && n.call(o, "finallyLoc") && this.prev < o.finallyLoc) { var i = o; break; } } i && ("break" === t || "continue" === t) && i.tryLoc <= e && e <= i.finallyLoc && (i = null); var a = i ? i.completion : {}; return a.type = t, a.arg = e, i ? (this.method = "next", this.next = i.finallyLoc, y) : this.complete(a); }, complete: function complete(t, e) { if ("throw" === t.type) throw t.arg; return "break" === t.type || "continue" === t.type ? this.next = t.arg : "return" === t.type ? (this.rval = this.arg = t.arg, this.method = "return", this.next = "end") : "normal" === t.type && e && (this.next = e), y; }, finish: function finish(t) { for (var e = this.tryEntries.length - 1; e >= 0; --e) { var r = this.tryEntries[e]; if (r.finallyLoc === t) return this.complete(r.completion, r.afterLoc), resetTryEntry(r), y; } }, catch: function _catch(t) { for (var e = this.tryEntries.length - 1; e >= 0; --e) { var r = this.tryEntries[e]; if (r.tryLoc === t) { var n = r.completion; if ("throw" === n.type) { var o = n.arg; resetTryEntry(r); } return o; } } throw new Error("illegal catch attempt"); }, delegateYield: function delegateYield(e, r, n) { return this.delegate = { iterator: values(e), resultName: r, nextLoc: n }, "next" === this.method && (this.arg = t), y; } }, e; }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
import { isArrayBuffer, isBlob, isString } from "../index";
// 生成 base64 格式
export var getBase64File = function getBase64File(file) {
return new Promise(function (resolve, reject) {
var reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function (ev) {
var _ev$target;
resolve((_ev$target = ev.target) === null || _ev$target === void 0 ? void 0 : _ev$target.result);
};
reader.onerror = function (err) {
reject(err);
};
});
};
// 获取图像对象 以及 获取宽高
export var getImgFile = function getImgFile(file) {
return new Promise(function (resolve, reject) {
var img = new Image();
img.src = file;
img.onload = function () {
return resolve(img);
};
img.onerror = function (err) {
return reject(err);
};
});
};
// 获取一个 2d 的 canvas 对象 且包含 2d 的 ctx 对象
export var generateCanvas2D = function generateCanvas2D(width, height) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
canvas.width = width;
canvas.height = height;
ctx.clearRect(0, 0, width, height);
canvas.ctx = ctx;
return canvas;
};
// 生成链接 实现下载文件
export var downloadAtLinkByHref = function downloadAtLinkByHref(href, filename) {
var aDom = document.createElement('a');
aDom.href = href;
aDom.download = filename;
document.body.appendChild(aDom);
aDom.click();
document.body.removeChild(aDom);
window.URL.revokeObjectURL(href);
};
// Blob 下载
export var downloadFile = function downloadFile(filename, file) {
var fileType = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'image/png';
if (!window || !Blob) {
throw '此方法不支持当前运行环境';
}
try {
var blob = isBlob(file) ? file : new File([file], filename, {
type: fileType
});
var href = window.URL.createObjectURL(blob); // 创建下载的链接
downloadAtLinkByHref(href, filename);
} catch (error) {
console.log(error, '下载出错');
}
};
// 根据 options 处理 size
var getSize = function getSize(size) {
if (size.changeWidth) {
size.width = size.changeWidth;
}
if (size.changeHeight) {
size.height = size.changeHeight;
}
if (size.scale && size.scale < 1 && size.scale > 0) {
size.width *= size.scale;
size.height *= size.scale;
}
// TODO: 计算尺寸似乎还有点问题
var originWidth = size.width;
var originHeight = size.height;
var maxWidth = 1400;
var maxHeight = 1400;
// 图片尺寸超过的限制
if (originWidth > maxWidth || originHeight > maxHeight) {
if (originWidth / originHeight > maxWidth / maxHeight) {
// 更宽，按照宽度限定尺寸
size.width = maxWidth;
size.height = Math.round(maxWidth * (originHeight / originWidth));
} else {
size.width = Math.round(maxHeight * (originWidth / originHeight));
size.height = maxHeight;
}
}
return {
width: size.width,
height: size.height
};
};
export var getImgCanvasCtx = /*#__PURE__*/function () {
var _ref = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(base64File, options) {
var img, _getSize, width, height, canvas;
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
_context.next = 2;
return getImgFile(base64File);
case 2:
img = _context.sent;
// 处理宽高
_getSize = getSize(_objectSpread({
width: img.width,
height: img.height,
scale: 1
}, options)), width = _getSize.width, height = _getSize.height;
canvas = generateCanvas2D(width, height); // 开始绘制图片
canvas.ctx.drawImage(img, 0, 0, img.width, img.height);
return _context.abrupt("return", canvas);
case 7:
case "end":
return _context.stop();
}
}, _callee);
}));
return function getImgCanvasCtx(_x, _x2) {
return _ref.apply(this, arguments);
};
}();
// 将 canvas 转换为 Blob 数据
export var canvas2file = function canvas2file(canvasCtx) {
var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'image/jpeg';
var quality = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0.5;
return new Promise(function (resolve) {
canvasCtx.toBlob(function (blob) {
return resolve(blob);
}, type, quality);
});
};
// 压缩图片
export var compressionFile = /*#__PURE__*/function () {
var _ref2 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2(file) {
var type,
options,
quality,
changeWidth,
changeHeight,
_options$compressionS,
compressionSize,
other,
base64File,
canvasCtx,
blob,
_args2 = arguments;
return _regeneratorRuntime().wrap(function _callee2$(_context2) {
while (1) switch (_context2.prev = _context2.next) {
case 0:
type = _args2.length > 1 && _args2[1] !== undefined ? _args2[1] : 'image/jpeg';
options = _args2.length > 2 && _args2[2] !== undefined ? _args2[2] : {
quality: 0.5
};
quality = options.quality, changeWidth = options.width, changeHeight = options.height, _options$compressionS = options.compressionSize, compressionSize = _options$compressionS === void 0 ? 300 : _options$compressionS, other = _objectWithoutProperties(options, _excluded); // 没有达到指定大小，不压缩
if (!(Math.round(file.size / 1024) <= compressionSize)) {
_context2.next = 5;
break;
}
return _context2.abrupt("return", file);
case 5:
_context2.next = 7;
return getBase64File(file);
case 7:
base64File = _context2.sent;
_context2.next = 10;
return getImgCanvasCtx(base64File, _objectSpread({
changeWidth: changeWidth,
changeHeight: changeHeight
}, other));
case 10:
canvasCtx = _context2.sent;
_context2.next = 13;
return canvas2file(canvasCtx, type, quality);
case 13:
blob = _context2.sent;
if (!(blob == undefined)) {
_context2.next = 16;
break;
}
return _context2.abrupt("return", null);
case 16:
return _context2.abrupt("return", new File([blob], file.name, {
type: type
}));
case 17:
case "end":
return _context2.stop();
}
}, _callee2);
}));
return function compressionFile(_x3) {
return _ref2.apply(this, arguments);
};
}();
// Blob 转 File
export var blob2file = function blob2file(blob, filename) {
if (!isBlob(blob) || !isString(blob) || !isArrayBuffer(blob)) return null;
return new File([blob], filename, {
type: 'application/json',
lastModified: Date.now()
});
};
// base64转file对象
export var base642file = function base642file(base, filename) {
var arr = base.split(',');
var mime = arr[0].match(/:(.*?);/)[1];
var suffix = mime.split('/')[1];
var bstr = atob(arr[1]);
var n = bstr.length;
var u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
// 转换成file对象
return new File([u8arr], "".concat(filename, ".").concat(suffix), {
type: mime
});
};
// 图片 url 转 文件对象 不支持跨域
export var getImageFileFromUrl = function getImageFileFromUrl(url, imageName) {
return new Promise(function (resolve, reject) {
var blob = null;
var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.setRequestHeader('Accept', 'image/png');
xhr.responseType = 'blob';
// 加载时处理
xhr.onload = function () {
// 获取返回结果
blob = xhr.response;
var imgFile = new File([blob], imageName, {
type: 'image/png'
});
// 返回结果
resolve(imgFile);
// xhr.abort();
};
xhr.onerror = function (e) {
reject(e);
};
// 发送
xhr.send();
});
};