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adaptive-expressions

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"use strict"; /** * @module adaptive-expressions */ /** * Copyright (c) Microsoft Corporation. All rights reserved. * Licensed under the MIT License. */ Object.defineProperty(exports, "__esModule", { value: true }); exports.Count = void 0; const expressionEvaluator_1 = require("../expressionEvaluator"); const expressionType_1 = require("../expressionType"); const functionUtils_1 = require("../functionUtils"); const returnType_1 = require("../returnType"); /** * Return the number of items in a collection. */ class Count extends expressionEvaluator_1.ExpressionEvaluator { /** * Initializes a new instance of the [Count](xref:adaptive-expressions.Count) class. */ constructor() { super(expressionType_1.ExpressionType.Count, Count.evaluator(), returnType_1.ReturnType.Number, Count.validator); } /** * @private */ static evaluator() { return functionUtils_1.FunctionUtils.apply((args) => { let count; if (typeof args[0] === 'string' || Array.isArray(args[0])) { count = args[0].length; } else if (args[0] instanceof Map) { count = args[0].size; } else if (typeof args[0] === 'object') { count = Object.keys(args[0]).length; } return count; }, functionUtils_1.FunctionUtils.verifyContainer); } /** * @private */ static validator(expression) { functionUtils_1.FunctionUtils.validateOrder(expression, [], returnType_1.ReturnType.String | returnType_1.ReturnType.Array); } } exports.Count = Count; //# sourceMappingURL=count.js.map