Nadro/4857/wasm panic catching errors (#4901)
* chore: skeleton code to initialize and detect the global WASM panic * chore: implementing a reimport method to fix the wasm instance being bricked * fix: cleaning up tsc/lint * fix: renaming file to be more accurate * fix: added toast message * fix: types... * fix: typed the functions with arg spreads
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51
src/lib/exceptions.ts
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51
src/lib/exceptions.ts
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import { kclManager } from 'lib/singletons'
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import { reloadModule, getModule } from 'lib/wasm_lib_wrapper'
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import toast from 'react-hot-toast'
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import { reportRejection } from './trap'
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let initialized = false
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/**
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* WASM/Rust runtime can panic and the original try/catch/finally blocks will not trigger
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* on the await promise. The interface will killed. This means we need to catch the error at
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* the global/DOM level. This will have to interface with whatever controlflow that needs to be picked up
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* within the error branch in the typescript to cover the application state.
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*/
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export const initializeWindowExceptionHandler = () => {
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if (window && !initialized) {
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window.addEventListener('error', (event) => {
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void (async () => {
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if (matchImportExportErrorCrash(event.message)) {
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// do global singleton cleanup
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kclManager.executeAstCleanUp()
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toast.error(
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'You have hit a KCL execution bug! Put your KCL code in a github issue to help us resolve this bug.'
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)
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try {
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await reloadModule()
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await getModule().default()
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} catch (e) {
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console.error('Failed to initialize wasm_lib')
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console.error(e)
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}
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}
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})().catch(reportRejection)
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})
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// Make sure we only initialize this event listener once
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initialized = true
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} else {
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console.error(
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`Failed to initialize, window: ${window}, initialized:${initialized}`
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)
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}
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}
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/**
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* Specifically match a substring of the message error to detect an import export runtime issue
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* when the WASM runtime panics
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*/
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const matchImportExportErrorCrash = (message: string): boolean => {
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// called `Result::unwrap_throw()` on an `Err` value
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const substringError = '`Result::unwrap_throw()` on an `Err` value'
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return message.indexOf(substringError) !== -1 ? true : false
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}
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