| /** |
| * @license |
| * Copyright Google LLC All Rights Reserved. |
| * |
| * Use of this source code is governed by an MIT-style license that can be |
| * found in the LICENSE file at https://angular.io/license |
| */ |
| export function coerceNumberProperty(value, fallbackValue = 0) { |
| return _isNumberValue(value) ? Number(value) : fallbackValue; |
| } |
| /** |
| * Whether the provided value is considered a number. |
| * @docs-private |
| */ |
| export function _isNumberValue(value) { |
| // parseFloat(value) handles most of the cases we're interested in (it treats null, empty string, |
| // and other non-number values as NaN, where Number just uses 0) but it considers the string |
| // '123hello' to be a valid number. Therefore we also check if Number(value) is NaN. |
| return !isNaN(parseFloat(value)) && !isNaN(Number(value)); |
| } |
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