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44 lines
885 B
JavaScript
44 lines
885 B
JavaScript
"use strict";
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module.exports = function createConsumable(initialValue) {
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let currentValue = initialValue;
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let isSet = (initialValue !== (void 0));
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return {
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set: function (newValue) {
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currentValue = newValue;
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isSet = true;
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},
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peek: function () {
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if (isSet) {
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return currentValue;
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} else {
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throw new Error(`No value is currently set`);
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}
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},
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isSet: function () {
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return isSet;
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},
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replace: function (newValue) {
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if (isSet) {
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let consumedValue = currentValue;
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currentValue = newValue;
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isSet = true;
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return consumedValue;
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} else {
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throw new Error(`No value is currently set`);
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}
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},
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consume: function () {
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if (isSet) {
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let consumedValue = currentValue;
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currentValue = undefined;
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isSet = false;
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return consumedValue;
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} else {
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throw new Error(`No value is currently set`);
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}
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}
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};
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};
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