Add support for replaying logs happen on async server operations #1649
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Actionable comments posted: 1
Outside diff range and nitpick comments (3)
node_package/src/buildConsoleReplay.ts (3)
16-19: Excellent change to improve robustness across different execution contexts.The replacement of
instanceof ArraywithArray.isArrayis a great improvement. It addresses potential issues with prototype mismatches when the code runs in different execution contexts, such as within a VM for node rendering.The updated comments provide valuable context for this change, which enhances code maintainability.
Consider adding a brief mention of why
Array.isArrayis preferred overinstanceof Arrayin the comments. This could help developers who might not be familiar with the nuances of these checks. For example:// Must use Array.isArray instead of instanceof Array the history array is defined outside the vm if node renderer is used. // In this case, the Array prototype used to define the array is not the same as the one in the global scope inside the vm. +// Array.isArray is more reliable as it works correctly even when the array is created in a different realm or execution context.
18-18: Consider removing or replacing the Flow commentThe
// $FlowFixMecomment is typically used for Flow type checking, but this file appears to be using TypeScript. Consider removing this comment or replacing it with a TypeScript-specific comment if type assertion is needed.If type assertion is needed, you could use a TypeScript assertion comment instead:
// @ts-ignoreOr, preferably, use a type assertion:
if (!Array.isArray(console.history as any[])) {
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29-29: Consider using a more specific type for the caught errorInstead of using
anyfor the caught error, consider using a more specific type. This will improve type safety and make the error handling more robust.You could use the
unknowntype and then narrow it down:} catch (e: unknown) { let errorMessage = 'An error occurred'; if (e instanceof Error) { errorMessage = e.message; } val = `${errorMessage}: ${arg}`; }This approach provides better type safety and more informative error messages.
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- node_package/src/buildConsoleReplay.ts (1 hunks)
- node_package/src/serverRenderReactComponent.ts (4 hunks)
Additional comments not posted (1)
node_package/src/buildConsoleReplay.ts (1)
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1-46: Summary of reviewThe changes made to this file improve its robustness when dealing with arrays from different execution contexts. The main functionality remains intact while addressing potential edge cases.
Key points:
- The switch to
Array.isArrayis a good improvement.- The updated comments provide valuable context for the change.
- There are opportunities for further improvements in type safety and error handling.
Overall, this change is a step in the right direction for making the code more reliable across different environments.
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (2)
node_package/src/buildConsoleReplay.ts (2)
14-19: Approve changes with a minor suggestion for comment improvement.The updated function signature and comment changes look good. Accepting
consoleHistoryas a parameter improves flexibility and testability. The explanation for usingArray.isArrayis valuable.Consider adding a brief explanation of why
consoleHistoryis now a parameter. For example:export function consoleReplay(consoleHistory: typeof console['history']): string { - // console.history is a global polyfill used in server rendering. + // consoleHistory is passed as a parameter to improve flexibility and testability. + // It replaces the global console.history polyfill previously used in server rendering. // Must use Array.isArray instead of instanceof Array the history array is defined outside the vm if node renderer is used. // In this case, the Array prototype used to define the array is not the same as the one in the global scope inside the vm.
44-45: Approve changes with a suggestion for JSDoc improvement.The updates to the
buildConsoleReplayfunction are consistent with the changes made toconsoleReplay. The modification improves the flexibility of the function.Consider adding a JSDoc comment to explain the purpose of the function and its parameter. For example:
/** * Builds a console replay script wrapped in script tags. * @param consoleHistory - The console history to be replayed. * @returns A string containing the console replay script wrapped in script tags. */ export default function buildConsoleReplay(consoleHistory: typeof console['history']): string { return RenderUtils.wrapInScriptTags('consoleReplayLog', consoleReplay(consoleHistory)); }
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- node_package/src/ReactOnRails.ts (1 hunks)
- node_package/src/buildConsoleReplay.ts (2 hunks)
- node_package/src/serverRenderReactComponent.ts (6 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- node_package/src/serverRenderReactComponent.ts
🔇 Additional comments (3)
node_package/src/buildConsoleReplay.ts (2)
19-19: Approve the updated condition.The change from
instanceof ArraytoArray.isArrayis correct and consistent with the updated comment. Using theconsoleHistoryparameter instead ofconsole.historyaligns with the function signature change.
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1-46: Summary of changes and alignment with PR objectives.The changes made to this file successfully contribute to the PR objective of adding support for replaying logs from async server operations. The modifications to
consoleReplayandbuildConsoleReplayfunctions improve flexibility and testability by accepting aconsoleHistoryparameter instead of relying on a global variable.Key improvements:
- Enhanced flexibility by parameterizing
consoleHistory.- Improved reliability by using
Array.isArrayinstead ofinstanceof Array.- Updated comments explaining the rationale behind the changes.
These changes will facilitate better debugging and monitoring of async server operations by allowing more controlled log replay.
To fully complete the PR objectives, please ensure that:
- Tests are added or updated to cover these changes.
- Documentation is updated to reflect the new function signatures and usage.
- The CHANGELOG is updated with an entry for this feature.
node_package/src/ReactOnRails.ts (1)
260-260: LGTM! Verify related changes and update tests/docs.The change to pass
console.historytobuildConsoleReplayaligns with the PR objective of supporting log replay for async server operations. This should improve debugging capabilities.Please ensure the following:
- The
buildConsoleReplayfunction (likely in another file) has been updated to accept and use thisconsole.historyparameter.- Unit tests have been updated or added to cover this change.
- Documentation has been updated to reflect this new functionality.
To verify the
buildConsoleReplayfunction update, you can run:Would you like assistance in updating the tests or documentation for this change?
Co-authored-by: Alexey Romanov <[email protected]>
| promiseResult = { | ||
| html: await renderResult, | ||
| html: awaitedRenderResult, |
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Why are we basically just moving the await to line 114?
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Actually, one additional question: Can we easily test these changes? |
| @@ -99,7 +98,7 @@ as a renderFunction and not a simple React Function Component.`); | |||
| renderingError = e; | |||
| } | |||
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| const consoleReplayScript = buildConsoleReplay(); | |||
| const consoleHistoryAfterSyncExecution = console.history; | |||
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Too confusing to use this getter...timing and globals
Could this be updated only for the pro version node renderer to return a object for the console history?
const reactRenderingResult = createReactOutput({
componentObj,
domNodeId,
trace,
props,
railsContext,
});
Summary
Remove this paragraph and provide a general description of the code changes in your pull
request... were there any bugs you had fixed? If so, mention them. If
these bugs have open GitHub issues, be sure to tag them here as well,
to keep the conversation linked together.
Pull Request checklist
Remove this line after checking all the items here. If the item is not applicable to the PR, both check it out and wrap it by
~.Add the CHANGELOG entry at the top of the file.
Other Information
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This change is
Summary by CodeRabbit
Bug Fixes
console.historyto ensure accurate console replay functionality across different execution contexts.console.historybased on the rendering outcome, ensuring it resets appropriately.New Features