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Fix Cannot read property 'proxyOf' of undefined exception from PostCSS #1377

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merged 1 commit into from Nov 27, 2020
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Fix Cannot read property 'proxyOf' of undefined exception from PostCSS #1377

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10 changes: 9 additions & 1 deletion lib/hacks/grid-utils.js
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Expand Up @@ -511,7 +511,15 @@ function insertAreas (css, isDisabled) {

// if we can't find the area name, update lastRule and continue
if (!area) {
let lastRuleIndex = css.index(rulesToInsert[lastArea].lastRule)
let lastRule = rulesToInsert[lastArea].lastRule
let lastRuleIndex
if (lastRule) {
lastRuleIndex = css.index(lastRule)
} else {
/* istanbul ignore next */
lastRuleIndex = -1
}

if (gridAreaRuleIndex > lastRuleIndex) {
rulesToInsert[lastArea].lastRule = gridAreaMedia || gridAreaRule
}
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