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43 lines
1.2 KiB
43 lines
1.2 KiB
3 years ago
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// @flow
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const cssRegex = /^([+-]?(?:\d+|\d*\.\d+))([a-z]*|%)$/
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/**
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* Returns a given CSS value minus its unit of measure.
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*
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* @deprecated - stripUnit's unitReturn functionality has been marked for deprecation in polished 4.0. It's functionality has been been moved to getValueAndUnit.
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*
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* @example
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* // Styles as object usage
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* const styles = {
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* '--dimension': stripUnit('100px')
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* }
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*
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* // styled-components usage
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* const div = styled.div`
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* --dimension: ${stripUnit('100px')};
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* `
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*
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* // CSS in JS Output
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*
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* element {
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* '--dimension': 100
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* }
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*/
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export default function stripUnit(value: string | number, unitReturn?: boolean): any {
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if (typeof value !== 'string') return unitReturn ? [value, undefined] : value
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const matchedValue = value.match(cssRegex)
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if (unitReturn) {
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// eslint-disable-next-line no-console
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console.warn(
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"stripUnit's unitReturn functionality has been marked for deprecation in polished 4.0. It's functionality has been been moved to getValueAndUnit.",
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)
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if (matchedValue) return [parseFloat(value), matchedValue[2]]
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return [value, undefined]
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}
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if (matchedValue) return parseFloat(value)
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return value
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}
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