mirror of https://github.com/getbible/app.git
58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
export const isArray = function (a) {
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return (!!a) && (a.constructor === Array);
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};
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export const isObject = function (a) {
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return (!!a) && (a.constructor === Object);
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};
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export const isDate = function (o) {
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return o instanceof Object && o.constructor === Date;
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}
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export const has = function (o, p) {
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let has = true
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for (const prop of p) {
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has = o.hasOwnProperty(prop)
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if (!has) break;
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}
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return has;
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}
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export const querablePromise = function (promise) {
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// Don't modify any promise that has been already modified.
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if (promise.isPending) return promise;
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// Setup our initial state.
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const state = {
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isPending: true,
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isRejected: false,
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isResolved: false,
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// Specified so that we'll generate accessor functions for them.
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err: undefined,
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val: undefined,
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};
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// We must actually wait for the promise to either resolve or reject,
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// wrap that value, then let it continue on.
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const result = promise.then(
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function (val) {
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state.isResolved = true;
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state.isPending = false;
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state.val = val;
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return val;
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},
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function (err) {
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state.isRejected = true;
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state.isPending = false;
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state.err = err;
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throw err;
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}
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);
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for (const val of Object.keys(state)) {
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result[val] = function () { return state[val]; };
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}
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return result;
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}
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