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perf(runtime-core): memoize getType #9739

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perf(runtime-core): memoize getType #9739

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15 changes: 11 additions & 4 deletions packages/runtime-core/src/componentProps.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -594,19 +594,26 @@ function validatePropName(key: string) {
return false
}

const typeMap = new WeakMap<PropConstructor, string>()

// use function string name to check type constructors
// so that it works across vms / iframes.
function getType(ctor: Prop<any>): string {
function getType(ctor: PropConstructor): string {
if (typeMap.has(ctor)) {
return typeMap.get(ctor)!
}
const match = ctor && ctor.toString().match(/^\s*(function|class) (\w+)/)
return match ? match[2] : ctor === null ? 'null' : ''
const type = match ? match[2] : ctor === null ? 'null' : ''
if (match) typeMap.set(ctor, type)
return type
}

function isSameType(a: Prop<any>, b: Prop<any>): boolean {
function isSameType(a: PropConstructor, b: PropConstructor): boolean {
return getType(a) === getType(b)
}

function getTypeIndex(
type: Prop<any>,
type: PropConstructor,
expectedTypes: PropType<any> | void | null | true
): number {
if (isArray(expectedTypes)) {
Expand Down