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151 lines (128 loc) 路 3.76 KB
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// ISC @ Julien Fontanet
"use strict";
// ===================================================================
var construct = typeof Reflect !== "undefined" ? Reflect.construct : undefined;
var defineProperty = Object.defineProperty;
// -------------------------------------------------------------------
var captureStackTrace = Error.captureStackTrace;
if (captureStackTrace === undefined) {
captureStackTrace = function captureStackTrace(error) {
var container = new Error();
defineProperty(error, "stack", {
configurable: true,
get: function getStack() {
var stack = container.stack;
// Replace property with value for faster future accesses.
defineProperty(this, "stack", {
configurable: true,
value: stack,
writable: true,
});
return stack;
},
set: function setStack(stack) {
defineProperty(error, "stack", {
configurable: true,
value: stack,
writable: true,
});
},
});
};
}
// -------------------------------------------------------------------
function BaseError(message) {
if (message !== undefined) {
defineProperty(this, "message", {
configurable: true,
value: message,
writable: true,
});
}
var cname = this.constructor.name;
if (cname !== undefined && cname !== this.name) {
defineProperty(this, "name", {
configurable: true,
value: cname,
writable: true,
});
}
captureStackTrace(this, this.constructor);
}
BaseError.prototype = Object.create(Error.prototype, {
// See: https://github.com/JsCommunity/make-error/issues/4
constructor: {
configurable: true,
value: BaseError,
writable: true,
},
});
// -------------------------------------------------------------------
// Sets the name of a function if possible (depends of the JS engine).
var setFunctionName = (function() {
function setFunctionName(fn, name) {
return defineProperty(fn, "name", {
configurable: true,
value: name,
});
}
try {
var f = function() {};
setFunctionName(f, "foo");
if (f.name === "foo") {
return setFunctionName;
}
} catch (_) {}
})();
// -------------------------------------------------------------------
function makeError(constructor, super_) {
if (super_ == null || super_ === Error) {
super_ = BaseError;
} else if (typeof super_ !== "function") {
throw new TypeError("super_ should be a function");
}
var name;
if (typeof constructor === "string") {
name = constructor;
constructor =
construct !== undefined
? function() {
return construct(super_, arguments, this.constructor);
}
: function() {
super_.apply(this, arguments);
};
// If the name can be set, do it once and for all.
if (setFunctionName !== undefined) {
setFunctionName(constructor, name);
name = undefined;
}
} else if (typeof constructor !== "function") {
throw new TypeError("constructor should be either a string or a function");
}
// Also register the super constructor also as `constructor.super_` just
// like Node's `util.inherits()`.
//
// eslint-disable-next-line dot-notation
constructor.super_ = constructor["super"] = super_;
var properties = {
constructor: {
configurable: true,
value: constructor,
writable: true,
},
};
// If the name could not be set on the constructor, set it on the
// prototype.
if (name !== undefined) {
properties.name = {
configurable: true,
value: name,
writable: true,
};
}
constructor.prototype = Object.create(super_.prototype, properties);
return constructor;
}
exports = module.exports = makeError;
exports.BaseError = BaseError;