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import { IPC } from "./index";
const ipc = IPC;
const queue = [];
export const run = async (moduleFactory)=>{
let nextId = 1;
const requests = new Map();
const internalIpc = {
sendInfo: (message)=>ipc.send({
type: "info",
data: message
}),
sendRequest: (message)=>{
const id = nextId++;
let resolve, reject;
const promise = new Promise((res, rej)=>{
resolve = res;
reject = rej;
});
requests.set(id, {
resolve,
reject
});
return ipc.send({
type: "request",
id,
data: message
}).then(()=>promise);
},
sendError: (error)=>{
return ipc.sendError(error);
}
};
let getValue;
try {
const module = await moduleFactory();
if (typeof module.init === "function") {
await module.init();
}
getValue = module.default;
await ipc.sendReady();
} catch (err) {
await ipc.sendReady();
await ipc.sendError(err);
}
let isRunning = false;
const run = async ()=>{
while(queue.length > 0){
const args = queue.shift();
try {
const value = await getValue(internalIpc, ...args);
await ipc.send({
type: "end",
data: value === undefined ? undefined : JSON.stringify(value, null, 2),
duration: 0
});
} catch (e) {
await ipc.sendError(e);
}
}
isRunning = false;
};
while(true){
const msg = await ipc.recv();
switch(msg.type){
case "evaluate":
{
queue.push(msg.args);
if (!isRunning) {
isRunning = true;
run();
}
break;
}
case "result":
{
const request = requests.get(msg.id);
if (request) {
requests.delete(msg.id);
if (msg.error) {
request.reject(new Error(msg.error));
} else {
request.resolve(msg.data);
}
}
break;
}
default:
{
console.error("unexpected message type", msg.type);
process.exit(1);
}
}
}
};
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