77 lines
1.9 KiB
TypeScript
77 lines
1.9 KiB
TypeScript
type FileHandler = (module:unknown)=>void
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const FileListeners = new Map() as Map<string, Array<FileHandler>>;
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export const FileListen =(inPath:string, inHandler:()=>void)=>
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{
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const members = FileListeners.get(inPath)??[];
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members.push(inHandler);
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FileListeners.set(inPath, members);
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};
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const Socket:WebSocket = new WebSocket("ws://"+document.location.host);
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Socket.addEventListener('message', (event:{data:string})=>
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{
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const handlers = FileListeners.get(event.data)??[];
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SocketReloads++;
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Promise.all(
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handlers.map((handler)=>
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{
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return import(event.data+"?reload="+SocketReloads)
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.then(updatedModule=>handler(updatedModule));
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})
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).then(HMR.update);
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});
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let SocketReloads = 0;
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// heartbeat
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const SocketTimer = setInterval(()=>{Socket.send("ping")}, 5000);
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const HMR = {
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reloads:0,
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registered: new Map() as Map<string, ()=>void>,
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states: new Map(),
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statesOld: new Map(),
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wireframe: false,
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onChange(key:string, value:()=>void):void
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{
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this.registered.set(key, value);
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},
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update()
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{
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this.reloads++;
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this.registered.forEach(handler=>handler());
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this.registered.clear();
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this.statesOld = this.states;
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this.states = new Map();
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this.echoState();
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},
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echoState()
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{
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let output = [];
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for(const[key, val] of HMR.statesOld)
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{
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output[key] = val.state+"--"+val.reload;
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}
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console.log(output);
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output = [];
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for(const[key, val] of HMR.states)
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{
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output[key] = val.state+"--"+val.reload;
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}
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console.log(output);
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}
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};
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export {HMR};
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export const MapAt =(inMap, inIndex)=>
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{
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let index = 0;
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for(const kvp of inMap)
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{
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if(index == inIndex)
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{
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return kvp;
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}
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index++;
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}
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return false;
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}; |