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35 lines
654 B
JavaScript
35 lines
654 B
JavaScript
'use strict';
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const promiseTry = require("es6-promise-try");
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function evaluateValue(value) {
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if (typeof value === "function") {
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return value();
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} else {
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return value;
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}
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}
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function defaultValue(value, fallbackValue) {
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value = evaluateValue(value);
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if (value != null) {
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return value;
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} else {
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return evaluateValue(fallbackValue);
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}
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}
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defaultValue.async = function defaultAsyncValue(value, fallbackValue) {
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return promiseTry(() => {
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return evaluateValue(value);
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}).then((resultValue) => {
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if (resultValue != null) {
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return resultValue;
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} else {
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return evaluateValue(fallbackValue);
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}
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})
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}
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module.exports = defaultValue; |