Function esbuildTargetToLightningCSS

packages/css/src/lightningcss.ts:173–199

(
  target: string[],
)

}

export function esbuildTargetToLightningCSS(
  target: string[],
): Targets | undefined {
  let targets: Targets | undefined

  const targetString = target.join(' ').toLowerCase()
  const matches = [...targetString.matchAll(TARGET_REGEX)]

  for (const match of matches) {
    const name = match[1]
    const browser = ESBUILD_LIGHTNINGCSS_MAPPING[name]
    if (!browser) {
      continue
    }

    const version = match[2]
    const versionInt = parseVersion(version)
    if (versionInt == null) {
      continue
    }

    targets = targets || {}
    targets[browser] = versionInt
  }

  return targets
}