113 lines
3.3 KiB
JavaScript
113 lines
3.3 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", { value: true });
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function defineReadOnly(object, name, value) {
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Object.defineProperty(object, name, {
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enumerable: true,
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value: value,
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writable: false,
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});
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}
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exports.defineReadOnly = defineReadOnly;
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// There are some issues with instanceof with npm link, so we use this
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// to ensure types are what we expect.
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function setType(object, type) {
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Object.defineProperty(object, '_ethersType', { configurable: false, value: type, writable: false });
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}
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exports.setType = setType;
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function isType(object, type) {
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return (object && object._ethersType === type);
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}
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exports.isType = isType;
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function resolveProperties(object) {
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var result = {};
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var promises = [];
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Object.keys(object).forEach(function (key) {
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var value = object[key];
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if (value instanceof Promise) {
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promises.push(value.then(function (value) {
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result[key] = value;
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return null;
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}));
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}
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else {
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result[key] = value;
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}
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});
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return Promise.all(promises).then(function () {
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return result;
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});
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}
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exports.resolveProperties = resolveProperties;
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function shallowCopy(object) {
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var result = {};
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for (var key in object) {
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result[key] = object[key];
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}
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return result;
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}
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exports.shallowCopy = shallowCopy;
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var opaque = { boolean: true, number: true, string: true };
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function deepCopy(object, frozen) {
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// Opaque objects are not mutable, so safe to copy by assignment
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if (object === undefined || object === null || opaque[typeof (object)]) {
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return object;
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}
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// Arrays are mutable, so we need to create a copy
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if (Array.isArray(object)) {
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var result = object.map(function (item) { return deepCopy(item, frozen); });
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if (frozen) {
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Object.freeze(result);
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}
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return result;
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}
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if (typeof (object) === 'object') {
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// Some internal objects, which are already immutable
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if (isType(object, 'BigNumber')) {
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return object;
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}
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if (isType(object, 'Description')) {
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return object;
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}
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if (isType(object, 'Indexed')) {
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return object;
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}
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var result = {};
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for (var key in object) {
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var value = object[key];
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if (value === undefined) {
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continue;
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}
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defineReadOnly(result, key, deepCopy(value, frozen));
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}
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if (frozen) {
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Object.freeze(result);
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}
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return result;
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}
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// The function type is also immutable, so safe to copy by assignment
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if (typeof (object) === 'function') {
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return object;
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}
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throw new Error('Cannot deepCopy ' + typeof (object));
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}
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exports.deepCopy = deepCopy;
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// See: https://github.com/isaacs/inherits/blob/master/inherits_browser.js
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function inherits(ctor, superCtor) {
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ctor.super_ = superCtor;
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ctor.prototype = Object.create(superCtor.prototype, {
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constructor: {
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value: ctor,
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enumerable: false,
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writable: true,
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configurable: true
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}
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});
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}
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function inheritable(parent) {
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return function (child) {
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inherits(child, parent);
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defineReadOnly(child, 'inherits', inheritable(child));
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};
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}
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exports.inheritable = inheritable;
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