electron/lib/browser/ipc-main-internal-utils.ts

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import { ipcMainInternal } from '@electron/internal/browser/ipc-main-internal';
type IPCHandler = (event: Electron.IpcMainInvokeEvent, ...args: any[]) => any
export const handleSync = function <T extends IPCHandler> (channel: string, handler: T) {
ipcMainInternal.on(channel, async (event, ...args) => {
try {
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event.returnValue = [null, await handler(event, ...args)];
} catch (error) {
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event.returnValue = [error];
}
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});
};
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let nextId = 0;
export function invokeInWebContents<T> (sender: Electron.WebContents, sendToAll: boolean, command: string, ...args: any[]) {
return new Promise<T>((resolve, reject) => {
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const requestId = ++nextId;
const channel = `${command}_RESPONSE_${requestId}`;
ipcMainInternal.on(channel, function handler (event, error: Error, result: any) {
if (event.sender !== sender) {
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console.error(`Reply to ${command} sent by unexpected WebContents (${event.sender.id})`);
return;
}
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ipcMainInternal.removeListener(channel, handler);
if (error) {
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reject(error);
} else {
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resolve(result);
}
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});
if (sendToAll) {
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sender._sendInternalToAll(command, requestId, ...args);
} else {
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sender._sendInternal(command, requestId, ...args);
}
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});
}