forked from EVOgeek/Vmeda.Online
35 lines
1.2 KiB
TypeScript
35 lines
1.2 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* Transform an Input value to a boolean.
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* False values are: 0, '0', 'false', false, undefined, null.
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* Please notice that empty strings are considered true for consistency with HTML.
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*
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* @param value Value to transform.
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* @returns Transformed value.
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*/
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export function toBoolean(value: unknown): boolean {
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if (value === undefined || value === null) {
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return false;
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}
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if (value === '') {
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// Empty string is considered true for consistency with HTML, where putting an attribute without value means true.
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return true;
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}
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return !(value === false || value === 'false' || Number(value) === 0);
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}
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