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import { regExpToken, SPACE } from '../tokenTypes'
const FLEX_WRAP = regExpToken(/(nowrap|wrap|wrap-reverse)/)
const FLEX_DIRECTION = regExpToken(/(row|row-reverse|column|column-reverse)/)
const defaultFlexWrap = 'nowrap'
const defaultFlexDirection = 'row'
export default tokenStream => {
let flexWrap
let flexDirection
let partsParsed = 0
while (partsParsed < 2 && tokenStream.hasTokens()) {
if (partsParsed !== 0) tokenStream.expect(SPACE)
if (flexWrap === undefined && tokenStream.matches(FLEX_WRAP)) {
flexWrap = tokenStream.lastValue
} else if (
flexDirection === undefined &&
tokenStream.matches(FLEX_DIRECTION)
) {
flexDirection = tokenStream.lastValue
} else {
tokenStream.throw()
}
partsParsed += 1
}
tokenStream.expectEmpty()
if (flexWrap === undefined) flexWrap = defaultFlexWrap
if (flexDirection === undefined) flexDirection = defaultFlexDirection
return { flexWrap, flexDirection }
}