scancss/dist/constants/cssUnitsThatAllowZeroWithoutUnit/index.js

A robust CSS stylesheet statistics collector and analyzer

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.cssUnitsThatAllowZeroWithoutUnit = undefined;

var _cssUnits = require('../cssUnits');

var _cssDurationUnits = require('../cssDurationUnits');

var _cssFrequencyUnits = require('../cssFrequencyUnits');

var _cssFlexibleLengthUnits = require('../cssFlexibleLengthUnits');

var _cssResolutionUnits = require('../cssResolutionUnits');

/**
 * https://www.w3.org/TR/css-values/#lengths
 * https://stylelint.io/user-guide/rules/length-zero-no-unit/
 * https://www.dunkman.me/blog/2017/css-zero-length-units.html
 *
 * CSS spec requires units to be specified for duration, grid fraction, frequency,
 * and resolution values — even for zero
 *
 * https://drafts.csswg.org/css-values-3/#angle-value
 *
 * NOTE: For legacy reasons, some uses of <angle> allow a bare `0` to mean `0deg`.
 * This is not true in general, however, and will not occur in future uses of
 * the <angle> type.
 */

const cssUnitsThatAllowZeroWithoutUnit = exports.cssUnitsThatAllowZeroWithoutUnit = _cssUnits.cssUnits.filter(unit => [..._cssDurationUnits.cssDurationUnits, ..._cssFlexibleLengthUnits.cssFlexibleLengthUnits, ..._cssFrequencyUnits.cssFrequencyUnits, ..._cssResolutionUnits.cssResolutionUnits].includes(unit) === false);