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Replace file-entry-cache with custom impl + built-in serializer
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| import fs from 'node:fs'; | ||
| import { timerify } from './Performance.js'; | ||
| import { debugLog } from './debug.js'; | ||
| import { isDirectory, isFile } from './fs.js'; | ||
| import { dirname, isAbsolute, resolve } from './path.js'; | ||
| import { deserialize, serialize } from './serialize.js'; | ||
|
|
||
| type MetaData<T> = { size: number; mtime: number; data?: T }; | ||
|
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| export type FileDescriptor<T> = { | ||
| key: string; | ||
| changed?: boolean; | ||
| notFound?: boolean; | ||
| err?: unknown; | ||
| meta?: MetaData<T>; | ||
| }; | ||
|
|
||
| const cwd = process.cwd(); | ||
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| const createCache = (filePath: string) => { | ||
| try { | ||
| return deserialize(fs.readFileSync(filePath)); | ||
| } catch (_err) { | ||
| debugLog('*', `Error reading cache from ${filePath}`); | ||
| } | ||
| }; | ||
|
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| const create = timerify(createCache); | ||
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| export class FileEntryCache<T> { | ||
| filePath: string; | ||
| cache = new Map<string, MetaData<T>>(); | ||
| normalizedEntries = new Map<string, FileDescriptor<T>>(); | ||
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| constructor(cacheId: string, _path: string) { | ||
| this.filePath = isAbsolute(_path) ? resolve(_path, cacheId) : resolve(cwd, _path, cacheId); | ||
| if (isFile(this.filePath)) this.cache = create(this.filePath); | ||
| this.removeNotFoundFiles(); | ||
| } | ||
|
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| removeNotFoundFiles() { | ||
| for (const filePath of this.normalizedEntries.keys()) { | ||
| try { | ||
| fs.statSync(filePath); | ||
| } catch (error) { | ||
| // @ts-expect-error | ||
| if (error.code === 'ENOENT') this.cache.delete(filePath); | ||
| } | ||
| } | ||
| } | ||
|
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| getFileDescriptor(filePath: string): FileDescriptor<T> { | ||
| let fstat: fs.Stats; | ||
|
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| try { | ||
| if (!isAbsolute(filePath)) filePath = resolve(filePath); | ||
| fstat = fs.statSync(filePath); | ||
| } catch (error: unknown) { | ||
| this.removeEntry(filePath); | ||
| return { key: filePath, notFound: true, err: error }; | ||
| } | ||
|
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| return this._getFileDescriptorUsingMtimeAndSize(filePath, fstat); | ||
| } | ||
|
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| _getFileDescriptorUsingMtimeAndSize(filePath: string, fstat: fs.Stats) { | ||
| let meta = this.cache.get(filePath); | ||
| const cacheExists = Boolean(meta); | ||
|
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| const cSize = fstat.size; | ||
| const cTime = fstat.mtime.getTime(); | ||
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| let isDifferentDate: undefined | boolean; | ||
| let isDifferentSize: undefined | boolean; | ||
|
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| if (meta) { | ||
| isDifferentDate = cTime !== meta.mtime; | ||
| isDifferentSize = cSize !== meta.size; | ||
| } else { | ||
| meta = { size: cSize, mtime: cTime }; | ||
| } | ||
|
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| const fd: FileDescriptor<T> = { | ||
| key: filePath, | ||
| changed: !cacheExists || isDifferentDate || isDifferentSize, | ||
| meta, | ||
| }; | ||
|
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| this.normalizedEntries.set(filePath, fd); | ||
|
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| return fd; | ||
| } | ||
|
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| removeEntry(entryName: string) { | ||
| if (!isAbsolute(entryName)) entryName = resolve(cwd, entryName); | ||
| this.normalizedEntries.delete(entryName); | ||
| this.cache.delete(entryName); | ||
| } | ||
|
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| _getMetaForFileUsingMtimeAndSize(cacheEntry: FileDescriptor<T>) { | ||
| const stat = fs.statSync(cacheEntry.key); | ||
| const meta = Object.assign(cacheEntry.meta ?? {}, { | ||
| size: stat.size, | ||
| mtime: stat.mtime.getTime(), | ||
| }); | ||
| return meta; | ||
| } | ||
|
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| reconcile() { | ||
| this.removeNotFoundFiles(); | ||
|
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| for (const [entryName, cacheEntry] of this.normalizedEntries.entries()) { | ||
| try { | ||
| const meta = this._getMetaForFileUsingMtimeAndSize(cacheEntry); | ||
| this.cache.set(entryName, meta); | ||
| } catch (error) { | ||
| // @ts-expect-error | ||
| if (error.code !== 'ENOENT') throw error; | ||
| } | ||
| } | ||
|
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| try { | ||
| const dir = dirname(this.filePath); | ||
| if (!isDirectory(dir)) fs.mkdirSync(dir, { recursive: true }); | ||
| fs.writeFileSync(this.filePath, serialize(this.cache)); | ||
| } catch (_err) { | ||
| debugLog('*', `Error writing cache to ${this.filePath}`); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,41 +1,14 @@ | ||
| import type { FileNode } from '../types/dependency-graph.js'; | ||
| import { timerify } from './Performance.js'; | ||
|
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| // biome-ignore lint/suspicious/noExplicitAny: deal with it | ||
| const serializeObj = (obj: any): any => { | ||
| if (!obj) return obj; | ||
| if (obj instanceof Set) return Array.from(obj); | ||
| if (obj instanceof Map) { | ||
| const o: { [key: string]: unknown } = { _m: 1 }; | ||
| for (const [key, value] of obj) o[key] = serializeObj(value); | ||
| return o; | ||
| } | ||
| if (typeof obj === 'object') for (const key in obj) obj[key] = serializeObj(obj[key]); | ||
| return obj; | ||
| }; | ||
|
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| // biome-ignore lint/suspicious/noExplicitAny: deal with it | ||
| const deserializeObj = (obj: any): any => { | ||
| if (!obj) return obj; | ||
| if (Array.isArray(obj)) return new Set(obj); | ||
| if (obj._m) { | ||
| const map = new Map(); | ||
| for (const key in obj) key !== '_m' && map.set(key, deserializeObj(obj[key])); | ||
| return map; | ||
| } | ||
| if (typeof obj === 'object') for (const key in obj) obj[key] = deserializeObj(obj[key]); | ||
| return obj; | ||
| }; | ||
|
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| const serialize = (data: FileNode): FileNode => { | ||
| const clone = structuredClone(data); | ||
| clone.imported = undefined; | ||
| clone.internalImportCache = undefined; | ||
| return serializeObj(clone); | ||
| }; | ||
|
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| const deserialize = (data: FileNode): FileNode => deserializeObj(data); | ||
|
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| export const _serialize = timerify(serialize); | ||
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| export const _deserialize = timerify(deserialize); | ||
| // biome-ignore lint: well | ||
| let s: (data: any) => Buffer, d: (buffer: Buffer) => any; | ||
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| if (typeof Bun !== 'undefined') { | ||
| const { serialize, deserialize } = await import('bun:jsc'); | ||
| s = serialize; | ||
| d = deserialize; | ||
| } else { | ||
| const { serialize, deserialize } = await import('node:v8'); | ||
| s = serialize; | ||
| d = deserialize; | ||
| } | ||
|
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| export { s as serialize, d as deserialize }; |
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