Method before

website/worker-configuration.d.ts:1233–1233

(content: string | ReadableStream | Response, options?: ContentOptions)

interface EndTag {
    name: string;
    before(content: string | ReadableStream | Response, options?: ContentOptions): EndTag;
    after(content: string | ReadableStream | Response, options?: ContentOptions): EndTag;
    remove(): EndTag;
}