#Error with importing const {writeFile} = require('fs') in preload.js

50 messages · Page 1 of 1 (latest)

random sundial
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Throws unable to load preload script.

sharp egret
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sandbox: false in webPreferences

random sundial
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how do you know this? And how do I find this myself?

sharp egret
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https://www.electronjs.org/docs/latest/tutorial/sandbox

Process Sandboxing | Electron

One key security feature in Chromium is that processes can be executed within a sandbox. The sandbox limits the harm that malicious code can cause by limiting access to most system resources — sandboxed processes can only freely use CPU cycles and memory. In order to perform operations requiring additional privilege, sandboxed processes use dedi...

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relatively new thing so everyone have issue with it

random sundial
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I see, thanks again!

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running into one last error.

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async function handleStop(e) {
const blob = new Blob(recordedChunks, {
type: 'video/webm; codecs=vp9'
});

const buffer = await blob.arrayBuffer();
const filePath = window.electron.openFile();

if (filePath){
window.electron.saveFile(buffer, filePath);
}
}

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Uncaught (in promise) Error: filePath is not defined

sharp egret
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need full stacktrace

random sundial
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as in how the function is running?

sharp egret
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screenshot with error

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not only error message

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and how openFIle function looks like

random sundial
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render.js:79 Uncaught (in promise) Error: filePath is not defined
at MediaRecorder.handleStop (render.js:79:19)
handleStop @ render.js:79

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openFile: () => ipcRenderer.invoke('dialog:openFile'),

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ipcMain.handle('dialog:openFile', handleFileOpen);

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async function handleFileOpen() {
const { canceled, filePaths } = await dialog.showOpenDialog({
properties: ["openDirectory"],
});
if (canceled) {
return
} else {
return filePaths[0]
}
}

sharp egret
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const filePath = await window.electron.openFile();

random sundial
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Uncaught (in promise) Error: filePath is not defined
at MediaRecorder.handleStop (render.js:79:19)
handleStop @ render.js:79

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now getting that

sharp egret
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mm

random sundial
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and 79 is window.electron.saveFile(buffer, filePath);

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I also tried console.log(filePath)

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and it printed the path just fine

sharp egret
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show me saveFile function

random sundial
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uh oh

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I think I caught it

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🤦‍♂️

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I caught the first error

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saveFile: () => writeFile(filePath, buffer, () => console.log('video saved successfully!')),

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saveFile: (filePath, buffer) => writeFile(filePath, buffer, () => console.log('video saved successfully!')),

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now getting render.js:80 Uncaught (in promise) Error: The "path" argument must be of type string or an instance of Buffer or URL. Received an instance of ArrayBuffer
at MediaRecorder.handleStop (render.js:80:19)

sharp egret
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window.electron.saveFile(buffer, filePath)

random sundial
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looks like need to convert arraybuffer

sharp egret
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no

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wrong arg order

random sundial
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🤦‍♂️

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I think I still need to convert to buffer

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must be of type string or an instance of Buffer, TypedArray, or DataView. Received an instance of ArrayBuffer
at MediaRecorder.handleStop

sharp egret
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new Uint8Array(buffer)

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const buffer = new Uint8Array(await blob.arrayBuffer());

random sundial
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holy cow!

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it worked!

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@sharp egret thank you so much dude!

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thank you for guiding me along. I'm brand new to this and it's very confusing. I really appreciate your help!

sharp egret
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when you faced with freezing suggest you to move your recording code into preload