Function formData

deps/undici/src/lib/web/fetch/body.js:340–386

()

    },

    formData () {
      // The formData() method steps are to return the result of running
      // consume body with this and the following step given a byte sequence bytes:
      return consumeBody(this, (value) => {
        // 1. Let mimeType be the result of get the MIME type with this.
        const mimeType = bodyMimeType(getInternalState(this))

        // 2. If mimeType is non-null, then switch on mimeType’s essence and run
        //    the corresponding steps:
        if (mimeType !== null) {
          switch (mimeType.essence) {
            case 'multipart/form-data': {
              // 1. ... [long step]
              // 2. If that fails for some reason, then throw a TypeError.
              const parsed = multipartFormDataParser(value, mimeType)

              // 3. Return a new FormData object, appending each entry,
              //    resulting from the parsing operation, to its entry list.
              const fd = new FormData()
              setFormDataState(fd, parsed)

              return fd
            }
            case 'application/x-www-form-urlencoded': {
              // 1. Let entries be the result of parsing bytes.
              const entries = new URLSearchParams(value.toString())

              // 2. If entries is failure, then throw a TypeError.

              // 3. Return a new FormData object whose entry list is entries.
              const fd = new FormData()

              for (const [name, value] of entries) {
                fd.append(name, value)
              }

              return fd
            }
          }
        }

        // 3. Throw a TypeError.
        throw new TypeError(
          'Content-Type was not one of "multipart/form-data" or "application/x-www-form-urlencoded".'
        )
      }, instance, getInternalState)
    },

    bytes () {
      // The bytes() method steps are to return the result of running consume body