Function Body

packages/core/fetch/index.mjs:212–315

()

    }

    function Body() {
        this.bodyUsed = false;

        this._initBody = function (body) {
            this._bodyInit = body;
            if (!body) {
                this._bodyText = "";
            } else if (typeof body === "string") {
                this._bodyText = body;
            } else if (support.blob && Blob.prototype.isPrototypeOf(body)) {
                this._bodyBlob = body;
            } else if (support.formData && FormData.prototype.isPrototypeOf(body)) {
                this._bodyFormData = body;
            } else if (
                support.searchParams &&
                URLSearchParams.prototype.isPrototypeOf(body)
            ) {
                this._bodyText = body.toString();
            } else if (support.arrayBuffer && support.blob && isDataView(body)) {
                this._bodyArrayBuffer = bufferClone(body.buffer);
                // IE 10-11 can't handle a DataView body.
                this._bodyInit = new Blob([this._bodyArrayBuffer]);
            } else if (
                support.arrayBuffer &&
                (ArrayBuffer.prototype.isPrototypeOf(body) || isArrayBufferView(body))
            ) {
                this._bodyArrayBuffer = bufferClone(body);
            } else {
                this._bodyText = body = Object.prototype.toString.call(body);
            }

            if (!this.headers.get("content-type")) {
                if (typeof body === "string") {
                    this.headers.set("content-type", "text/plain;charset=UTF-8");
                } else if (this._bodyBlob && this._bodyBlob.type) {
                    this.headers.set("content-type", this._bodyBlob.type);
                } else if (
                    support.searchParams &&
                    URLSearchParams.prototype.isPrototypeOf(body)
                ) {
                    this.headers.set(
                        "content-type",
                        "application/x-www-form-urlencoded;charset=UTF-8"
                    );
                }
            }
        };

        if (support.blob) {
            this.blob = function () {
                var rejected = consumed(this);
                if (rejected) {
                    return rejected;
                }

                if (this._bodyBlob) {
                    return Promise.resolve(this._bodyBlob);
                } else if (this._bodyArrayBuffer) {