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7.0.0-alpha.5: graph navigation and events improvements
- Add go() method for graph navigation through contains - Improve value unpacking with proper type handling - Return unsubscribe function from on() - Fix file sync tests cleanup - Enhance event handling in syncJSONFile - Bump version to 7.0.0-alpha.5
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| import { Deep } from './deep.js'; | ||
| import chokidar from 'chokidar'; | ||
| import fs from 'fs/promises'; | ||
|
|
||
| /** | ||
| * Synchronizes a JSON file with a Deep selection. | ||
| * When file changes, creates a new selection from the file content. | ||
| * When input selection changes, saves it to the file. | ||
| * | ||
| * @param inputSelection - The Deep selection to sync with file | ||
| * @param path - Path to the JSON file | ||
| * @returns The selection created from file content | ||
| */ | ||
| export async function syncJSONFile(inputSelection: Deep, path: string): Promise<Deep> { | ||
| const deep = inputSelection.deep; | ||
| let SyncJSONFile = deep.contains.SyncJSONFile; | ||
| if (!SyncJSONFile) { | ||
| SyncJSONFile = deep.contains.SyncJSONFile = deep.new(); | ||
| const allJSONFiles = deep.select({ type: SyncJSONFile }); | ||
| allJSONFiles.on((event) => { | ||
| if (event.name === 'kill') { | ||
|
|
||
| } | ||
| }); | ||
| } | ||
| const syncJSONFile = SyncJSONFile.new(); | ||
|
|
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| // Create initial selection from file | ||
| try { | ||
| const fileContent = await fs.readFile(path, 'utf-8'); | ||
| const data = JSON.parse(fileContent); | ||
| const fileSelection = inputSelection.unpack(data); | ||
| } catch (error) { | ||
| if (error.code === 'ENOENT') { // File doesn't exist | ||
| // Save initial selection to file | ||
| const data = await inputSelection.pack; | ||
| await fs.writeFile(path, JSON.stringify(data, null, 2)); | ||
| } else { | ||
| console.error(`Error loading initial data from ${path}:`, error); | ||
| throw error; | ||
| } | ||
| } | ||
|
|
||
| // Watch for file changes | ||
| const watcher = chokidar.watch(path, { | ||
| persistent: true, | ||
| ignoreInitial: true, | ||
| }); | ||
| syncJSONFile.from = deep.wrap(() => { | ||
| console.log('closing watcher'); | ||
| watcher.close(); | ||
| }); | ||
|
|
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| let isUpdatingFile = false; // Flag to prevent recursive updates | ||
|
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| watcher.on('change', async () => { | ||
| if (isUpdatingFile) return; // Skip if we're currently updating the file | ||
|
|
||
| try { | ||
| const fileContent = await fs.readFile(path, 'utf-8'); | ||
| const data = JSON.parse(fileContent); | ||
| const fileSelection = await inputSelection.unpack(data); | ||
| } catch (error) { | ||
| console.error(`Error processing file change for ${path}:`, error); | ||
| } | ||
| }); | ||
|
|
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| // Watch for input selection changes | ||
| const unsubscribe = inputSelection.on(async (event) => { | ||
| if (isUpdatingFile) return; // Skip if we're currently updating the file | ||
|
|
||
| try { | ||
| isUpdatingFile = true; | ||
| const data = await inputSelection.pack; | ||
| await fs.writeFile(path, JSON.stringify(data, null, 2)); | ||
| } catch (error) { | ||
| console.error(`Error saving changes to ${path}:`, error); | ||
| } finally { | ||
| isUpdatingFile = false; | ||
| } | ||
| }); | ||
| syncJSONFile.to = deep.wrap(unsubscribe); | ||
|
|
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| // Add cleanup method to the returned selection | ||
| syncJSONFile.kill = () => { | ||
| syncJSONFile.from.call(); | ||
| syncJSONFile.to.call(); | ||
| }; | ||
|
|
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| return syncJSONFile; | ||
| } | ||
|
|
||
| export default syncJSONFile; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| import './tests/core.js'; | ||
| import './tests/sync.js'; | ||
| import './tests/select.js'; | ||
| // import './tests/langchain.js'; |
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