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ReactFlightDOMRelayServerHostConfig.js
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ReactFlightDOMRelayServerHostConfig.js
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import type {RowEncoding, JSONValue} from './ReactFlightDOMRelayProtocol';
import type {Request, ReactModel} from 'react-server/src/ReactFlightServer';
import type {JSResourceReference} from 'JSResourceReference';
import JSResourceReferenceImpl from 'JSResourceReferenceImpl';
import hasOwnProperty from 'shared/hasOwnProperty';
import isArray from 'shared/isArray';
export type ModuleReference<T> = JSResourceReference<T>;
import type {
Destination,
BundlerConfig,
ModuleMetaData,
} from 'ReactFlightDOMRelayServerIntegration';
import {resolveModelToJSON} from 'react-server/src/ReactFlightServer';
import {
emitRow,
resolveModuleMetaData as resolveModuleMetaDataImpl,
close,
} from 'ReactFlightDOMRelayServerIntegration';
export type {
Destination,
BundlerConfig,
ModuleMetaData,
} from 'ReactFlightDOMRelayServerIntegration';
export function isModuleReference(reference: Object): boolean {
return reference instanceof JSResourceReferenceImpl;
}
export type ModuleKey = ModuleReference<any>;
export function getModuleKey(reference: ModuleReference<any>): ModuleKey {
// We use the reference object itself as the key because we assume the
// object will be cached by the bundler runtime.
return reference;
}
export function resolveModuleMetaData<T>(
config: BundlerConfig,
resource: ModuleReference<T>,
): ModuleMetaData {
return resolveModuleMetaDataImpl(config, resource);
}
export type Chunk = RowEncoding;
export function processErrorChunk(
request: Request,
id: number,
message: string,
stack: string,
): Chunk {
return [
'E',
id,
{
message,
stack,
},
];
}
function convertModelToJSON(
request: Request,
parent: {+[key: string]: ReactModel} | $ReadOnlyArray<ReactModel>,
key: string,
model: ReactModel,
): JSONValue {
const json = resolveModelToJSON(request, parent, key, model);
if (typeof json === 'object' && json !== null) {
if (isArray(json)) {
const jsonArray: Array<JSONValue> = [];
for (let i = 0; i < json.length; i++) {
jsonArray[i] = convertModelToJSON(request, json, '' + i, json[i]);
}
return jsonArray;
} else {
const jsonObj: {[key: string]: JSONValue} = {};
for (const nextKey in json) {
if (hasOwnProperty.call(json, nextKey)) {
jsonObj[nextKey] = convertModelToJSON(
request,
json,
nextKey,
json[nextKey],
);
}
}
return jsonObj;
}
}
return json;
}
export function processModelChunk(
request: Request,
id: number,
model: ReactModel,
): Chunk {
const json = convertModelToJSON(request, {}, '', model);
return ['J', id, json];
}
export function processReferenceChunk(
request: Request,
id: number,
reference: string,
): Chunk {
return ['J', id, reference];
}
export function processModuleChunk(
request: Request,
id: number,
moduleMetaData: ModuleMetaData,
): Chunk {
// The moduleMetaData is already a JSON serializable value.
return ['M', id, moduleMetaData];
}
export function processProviderChunk(
request: Request,
id: number,
contextName: string,
): Chunk {
return ['P', id, contextName];
}
export function processSymbolChunk(
request: Request,
id: number,
name: string,
): Chunk {
return ['S', id, name];
}
export function scheduleWork(callback: () => void) {
callback();
}
export function flushBuffered(destination: Destination) {}
export function beginWriting(destination: Destination) {}
export function writeChunk(destination: Destination, chunk: Chunk): void {
emitRow(destination, chunk);
}
export function writeChunkAndReturn(
destination: Destination,
chunk: Chunk,
): boolean {
emitRow(destination, chunk);
return true;
}
export function completeWriting(destination: Destination) {}
export {close};
export function closeWithError(destination: Destination, error: mixed): void {
close(destination);
}