hexo/node_modules/bluebird/js/release/util.js

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JavaScript
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2023-09-25 15:58:56 +08:00
"use strict";
var es5 = require("./es5");
var canEvaluate = typeof navigator == "undefined";
var errorObj = {e: {}};
var tryCatchTarget;
var globalObject = typeof self !== "undefined" ? self :
typeof window !== "undefined" ? window :
typeof global !== "undefined" ? global :
this !== undefined ? this : null;
function tryCatcher() {
try {
var target = tryCatchTarget;
tryCatchTarget = null;
return target.apply(this, arguments);
} catch (e) {
errorObj.e = e;
return errorObj;
}
}
function tryCatch(fn) {
tryCatchTarget = fn;
return tryCatcher;
}
var inherits = function(Child, Parent) {
var hasProp = {}.hasOwnProperty;
function T() {
this.constructor = Child;
this.constructor$ = Parent;
for (var propertyName in Parent.prototype) {
if (hasProp.call(Parent.prototype, propertyName) &&
propertyName.charAt(propertyName.length-1) !== "$"
) {
this[propertyName + "$"] = Parent.prototype[propertyName];
}
}
}
T.prototype = Parent.prototype;
Child.prototype = new T();
return Child.prototype;
};
function isPrimitive(val) {
return val == null || val === true || val === false ||
typeof val === "string" || typeof val === "number";
}
function isObject(value) {
return typeof value === "function" ||
typeof value === "object" && value !== null;
}
function maybeWrapAsError(maybeError) {
if (!isPrimitive(maybeError)) return maybeError;
return new Error(safeToString(maybeError));
}
function withAppended(target, appendee) {
var len = target.length;
var ret = new Array(len + 1);
var i;
for (i = 0; i < len; ++i) {
ret[i] = target[i];
}
ret[i] = appendee;
return ret;
}
function getDataPropertyOrDefault(obj, key, defaultValue) {
if (es5.isES5) {
var desc = Object.getOwnPropertyDescriptor(obj, key);
if (desc != null) {
return desc.get == null && desc.set == null
? desc.value
: defaultValue;
}
} else {
return {}.hasOwnProperty.call(obj, key) ? obj[key] : undefined;
}
}
function notEnumerableProp(obj, name, value) {
if (isPrimitive(obj)) return obj;
var descriptor = {
value: value,
configurable: true,
enumerable: false,
writable: true
};
es5.defineProperty(obj, name, descriptor);
return obj;
}
function thrower(r) {
throw r;
}
var inheritedDataKeys = (function() {
var excludedPrototypes = [
Array.prototype,
Object.prototype,
Function.prototype
];
var isExcludedProto = function(val) {
for (var i = 0; i < excludedPrototypes.length; ++i) {
if (excludedPrototypes[i] === val) {
return true;
}
}
return false;
};
if (es5.isES5) {
var getKeys = Object.getOwnPropertyNames;
return function(obj) {
var ret = [];
var visitedKeys = Object.create(null);
while (obj != null && !isExcludedProto(obj)) {
var keys;
try {
keys = getKeys(obj);
} catch (e) {
return ret;
}
for (var i = 0; i < keys.length; ++i) {
var key = keys[i];
if (visitedKeys[key]) continue;
visitedKeys[key] = true;
var desc = Object.getOwnPropertyDescriptor(obj, key);
if (desc != null && desc.get == null && desc.set == null) {
ret.push(key);
}
}
obj = es5.getPrototypeOf(obj);
}
return ret;
};
} else {
var hasProp = {}.hasOwnProperty;
return function(obj) {
if (isExcludedProto(obj)) return [];
var ret = [];
/*jshint forin:false */
enumeration: for (var key in obj) {
if (hasProp.call(obj, key)) {
ret.push(key);
} else {
for (var i = 0; i < excludedPrototypes.length; ++i) {
if (hasProp.call(excludedPrototypes[i], key)) {
continue enumeration;
}
}
ret.push(key);
}
}
return ret;
};
}
})();
var thisAssignmentPattern = /this\s*\.\s*\S+\s*=/;
function isClass(fn) {
try {
if (typeof fn === "function") {
var keys = es5.names(fn.prototype);
var hasMethods = es5.isES5 && keys.length > 1;
var hasMethodsOtherThanConstructor = keys.length > 0 &&
!(keys.length === 1 && keys[0] === "constructor");
var hasThisAssignmentAndStaticMethods =
thisAssignmentPattern.test(fn + "") && es5.names(fn).length > 0;
if (hasMethods || hasMethodsOtherThanConstructor ||
hasThisAssignmentAndStaticMethods) {
return true;
}
}
return false;
} catch (e) {
return false;
}
}
function toFastProperties(obj) {
/*jshint -W027,-W055,-W031*/
function FakeConstructor() {}
FakeConstructor.prototype = obj;
var receiver = new FakeConstructor();
function ic() {
return typeof receiver.foo;
}
ic();
ic();
return obj;
eval(obj);
}
var rident = /^[a-z$_][a-z$_0-9]*$/i;
function isIdentifier(str) {
return rident.test(str);
}
function filledRange(count, prefix, suffix) {
var ret = new Array(count);
for(var i = 0; i < count; ++i) {
ret[i] = prefix + i + suffix;
}
return ret;
}
function safeToString(obj) {
try {
return obj + "";
} catch (e) {
return "[no string representation]";
}
}
function isError(obj) {
return obj instanceof Error ||
(obj !== null &&
typeof obj === "object" &&
typeof obj.message === "string" &&
typeof obj.name === "string");
}
function markAsOriginatingFromRejection(e) {
try {
notEnumerableProp(e, "isOperational", true);
}
catch(ignore) {}
}
function originatesFromRejection(e) {
if (e == null) return false;
return ((e instanceof Error["__BluebirdErrorTypes__"].OperationalError) ||
e["isOperational"] === true);
}
function canAttachTrace(obj) {
return isError(obj) && es5.propertyIsWritable(obj, "stack");
}
var ensureErrorObject = (function() {
if (!("stack" in new Error())) {
return function(value) {
if (canAttachTrace(value)) return value;
try {throw new Error(safeToString(value));}
catch(err) {return err;}
};
} else {
return function(value) {
if (canAttachTrace(value)) return value;
return new Error(safeToString(value));
};
}
})();
function classString(obj) {
return {}.toString.call(obj);
}
function copyDescriptors(from, to, filter) {
var keys = es5.names(from);
for (var i = 0; i < keys.length; ++i) {
var key = keys[i];
if (filter(key)) {
try {
es5.defineProperty(to, key, es5.getDescriptor(from, key));
} catch (ignore) {}
}
}
}
var asArray = function(v) {
if (es5.isArray(v)) {
return v;
}
return null;
};
if (typeof Symbol !== "undefined" && Symbol.iterator) {
var ArrayFrom = typeof Array.from === "function" ? function(v) {
return Array.from(v);
} : function(v) {
var ret = [];
var it = v[Symbol.iterator]();
var itResult;
while (!((itResult = it.next()).done)) {
ret.push(itResult.value);
}
return ret;
};
asArray = function(v) {
if (es5.isArray(v)) {
return v;
} else if (v != null && typeof v[Symbol.iterator] === "function") {
return ArrayFrom(v);
}
return null;
};
}
var isNode = typeof process !== "undefined" &&
classString(process).toLowerCase() === "[object process]";
var hasEnvVariables = typeof process !== "undefined" &&
typeof process.env !== "undefined";
function env(key) {
return hasEnvVariables ? process.env[key] : undefined;
}
function getNativePromise() {
if (typeof Promise === "function") {
try {
var promise = new Promise(function(){});
if (classString(promise) === "[object Promise]") {
return Promise;
}
} catch (e) {}
}
}
var reflectHandler;
function contextBind(ctx, cb) {
if (ctx === null ||
typeof cb !== "function" ||
cb === reflectHandler) {
return cb;
}
if (ctx.domain !== null) {
cb = ctx.domain.bind(cb);
}
var async = ctx.async;
if (async !== null) {
var old = cb;
cb = function() {
var $_len = arguments.length + 2;var args = new Array($_len); for(var $_i = 2; $_i < $_len ; ++$_i) {args[$_i] = arguments[$_i - 2];};
args[0] = old;
args[1] = this;
return async.runInAsyncScope.apply(async, args);
};
}
return cb;
}
var ret = {
setReflectHandler: function(fn) {
reflectHandler = fn;
},
isClass: isClass,
isIdentifier: isIdentifier,
inheritedDataKeys: inheritedDataKeys,
getDataPropertyOrDefault: getDataPropertyOrDefault,
thrower: thrower,
isArray: es5.isArray,
asArray: asArray,
notEnumerableProp: notEnumerableProp,
isPrimitive: isPrimitive,
isObject: isObject,
isError: isError,
canEvaluate: canEvaluate,
errorObj: errorObj,
tryCatch: tryCatch,
inherits: inherits,
withAppended: withAppended,
maybeWrapAsError: maybeWrapAsError,
toFastProperties: toFastProperties,
filledRange: filledRange,
toString: safeToString,
canAttachTrace: canAttachTrace,
ensureErrorObject: ensureErrorObject,
originatesFromRejection: originatesFromRejection,
markAsOriginatingFromRejection: markAsOriginatingFromRejection,
classString: classString,
copyDescriptors: copyDescriptors,
isNode: isNode,
hasEnvVariables: hasEnvVariables,
env: env,
global: globalObject,
getNativePromise: getNativePromise,
contextBind: contextBind
};
ret.isRecentNode = ret.isNode && (function() {
var version;
if (process.versions && process.versions.node) {
version = process.versions.node.split(".").map(Number);
} else if (process.version) {
version = process.version.split(".").map(Number);
}
return (version[0] === 0 && version[1] > 10) || (version[0] > 0);
})();
ret.nodeSupportsAsyncResource = ret.isNode && (function() {
var supportsAsync = false;
try {
var res = require("async_hooks").AsyncResource;
supportsAsync = typeof res.prototype.runInAsyncScope === "function";
} catch (e) {
supportsAsync = false;
}
return supportsAsync;
})();
if (ret.isNode) ret.toFastProperties(process);
try {throw new Error(); } catch (e) {ret.lastLineError = e;}
module.exports = ret;