Function processWithDefaults

packages/compiler-sfc/src/script/defineProps.ts:95–139

(
  ctx: ScriptCompileContext,
  node: Node,
  declId?: LVal,
)

}

function processWithDefaults(
  ctx: ScriptCompileContext,
  node: Node,
  declId?: LVal,
): boolean {
  if (!isCallOf(node, WITH_DEFAULTS)) {
    return false
  }
  if (
    !processDefineProps(
      ctx,
      node.arguments[0],
      declId,
      true /* isWithDefaults */,
    )
  ) {
    ctx.error(
      `${WITH_DEFAULTS}' first argument must be a ${DEFINE_PROPS} call.`,
      node.arguments[0] || node,
    )
  }

  if (ctx.propsRuntimeDecl) {
    ctx.error(
      `${WITH_DEFAULTS} can only be used with type-based ` +
        `${DEFINE_PROPS} declaration.`,
      node,
    )
  }
  if (declId && declId.type === 'ObjectPattern') {
    ctx.warn(
      `${WITH_DEFAULTS}() is unnecessary when using destructure with ${DEFINE_PROPS}().\n` +
        `Reactive destructure will be disabled when using withDefaults().\n` +
        `Prefer using destructure default values, e.g. const { foo = 1 } = defineProps(...). `,
      node.callee,
    )
  }
  ctx.propsRuntimeDefaults = node.arguments[1]
  if (!ctx.propsRuntimeDefaults) {
    ctx.error(`The 2nd argument of ${WITH_DEFAULTS} is required.`, node)
  }
  ctx.propsCall = node

  return true
}

export function genRuntimeProps(ctx: ScriptCompileContext): string | undefined {
  let propsDecls: undefined | string