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export function css(
strings: TemplateStringsArray,
...keys: readonly string[]
): string {
const lastIndex = strings.length - 1
const str =
// Convert template literal into a single line string
strings.slice(0, lastIndex).reduce((p, s, i) => p + s + keys[i], '') +
strings[lastIndex]
return (
str
// Remove comments
.replace(/\/\*[\s\S]*?\*\//g, '')
// Remove whitespace, tabs, and newlines
.replace(/\s+/g, ' ')
// Remove spaces before and after semicolons, and spaces after commas
.replace(/\s*([:;,{}])\s*/g, '$1')
// Remove extra semicolons
.replace(/;+}/g, '}')
// Trim leading and trailing whitespaces
.trim()
)
}
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