60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
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'use strict';
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var values = require('../helpers/values');
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var nestedValue = require('../helpers/nestedValue');
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module.exports = function where(key, operator, value) {
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var comparisonOperator = operator;
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var comparisonValue = value;
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var items = values(this.items);
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if (operator === undefined || operator === true) {
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return new this.constructor(items.filter(function (item) {
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return nestedValue(item, key);
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}));
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}
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if (operator === false) {
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return new this.constructor(items.filter(function (item) {
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return !nestedValue(item, key);
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}));
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}
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if (value === undefined) {
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comparisonValue = operator;
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comparisonOperator = '===';
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}
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var collection = items.filter(function (item) {
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switch (comparisonOperator) {
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case '==':
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return nestedValue(item, key) === Number(comparisonValue) || nestedValue(item, key) === comparisonValue.toString();
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default:
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case '===':
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return nestedValue(item, key) === comparisonValue;
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case '!=':
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case '<>':
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return nestedValue(item, key) !== Number(comparisonValue) && nestedValue(item, key) !== comparisonValue.toString();
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case '!==':
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return nestedValue(item, key) !== comparisonValue;
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case '<':
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return nestedValue(item, key) < comparisonValue;
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case '<=':
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return nestedValue(item, key) <= comparisonValue;
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case '>':
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return nestedValue(item, key) > comparisonValue;
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case '>=':
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return nestedValue(item, key) >= comparisonValue;
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}
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});
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return new this.constructor(collection);
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};
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