Function compileScript

packages/compiler-sfc/src/compileScript.ts:168–1119

(
  sfc: SFCDescriptor,
  options: SFCScriptCompileOptions,
)

 * normal `<script>` + `<script setup>` if both are present.
 */
export function compileScript(
  sfc: SFCDescriptor,
  options: SFCScriptCompileOptions,
): SFCScriptBlock {
  if (!options.id) {
    warnOnce(
      `compileScript now requires passing the \`id\` option.\n` +
        `Upgrade your vite or vue-loader version for compatibility with ` +
        `the latest experimental proposals.`,
    )
  }

  const { script, scriptSetup, source, filename } = sfc
  const hoistStatic = options.hoistStatic !== false && !script
  const scopeId = options.id ? options.id.replace(/^data-v-/, '') : ''
  const scriptLang = script && script.lang
  const scriptSetupLang = scriptSetup && scriptSetup.lang
  const isJSOrTS =
    isJS(scriptLang, scriptSetupLang) || isTS(scriptLang, scriptSetupLang)

  if (script && scriptSetup && scriptLang !== scriptSetupLang) {
    throw new Error(
      `[@vue/compiler-sfc] <script> and <script setup> must have the same ` +
        `language type.`,
    )
  }

  if (!scriptSetup) {
    if (!script) {
      throw new Error(`[@vue/compiler-sfc] SFC contains no <script> tags.`)
    }

    // normal <script> only
    if (script.lang && !isJSOrTS) {
      // do not process non js/ts script blocks
      return script
    }

    const ctx = new ScriptCompileContext(sfc, options)
    return processNormalScript(ctx, scopeId)
  }

  if (scriptSetupLang && !isJSOrTS) {
    // do not process non js/ts script blocks
    return scriptSetup
  }

  const ctx = new ScriptCompileContext(sfc, options)

  // metadata that needs to be returned
  // const ctx.bindingMetadata: BindingMetadata = {}
  const scriptBindings: Record<string, BindingTypes> = Object.create(null)
  const setupBindings: Record<string, BindingTypes> = Object.create(null)

  let defaultExport: Node | undefined
  let hasAwait = false
  let hasInlinedSsrRenderFn = false