feat: use better type for Node adapters (fs.FilePath)

Author: typicode

src/adapters/node/JSONFile.ts

@@ -1,10 +1,12 @@
+import { PathLike } from 'fs'
+
 import { Adapter, SyncAdapter } from '../../core/Low.js'
 import { TextFile, TextFileSync } from './TextFile.js'
 
 export class JSONFile<T> implements Adapter<T> {
   #adapter: TextFile
 
-  constructor(filename: string) {
+  constructor(filename: PathLike) {
     this.#adapter = new TextFile(filename)
   }
 
@@ -25,7 +27,7 @@ export class JSONFile<T> implements Adapter<T> {
 export class JSONFileSync<T> implements SyncAdapter<T> {
   #adapter: TextFileSync
 
-  constructor(filename: string) {
+  constructor(filename: PathLike) {
     this.#adapter = new TextFileSync(filename)
   }
 

src/adapters/node/TextFile.ts

@@ -7,10 +7,10 @@ import { Writer } from 'steno'
 import { Adapter, SyncAdapter } from '../../core/Low.js'
 
 export class TextFile implements Adapter<string> {
-  #filename: string
+  #filename: fs.PathLike
   #writer: Writer
 
-  constructor(filename: string) {
+  constructor(filename: fs.PathLike) {
     this.#filename = filename
     this.#writer = new Writer(filename)
   }
@@ -36,15 +36,13 @@ export class TextFile implements Adapter<string> {
 }
 
 export class TextFileSync implements SyncAdapter<string> {
-  #tempFilename: string
-  #filename: string
+  #tempFilename: fs.PathLike
+  #filename: fs.PathLike
 
-  constructor(filename: string) {
+  constructor(filename: fs.PathLike) {
     this.#filename = filename
-    this.#tempFilename = path.join(
-      path.dirname(filename),
-      `.${path.basename(filename)}.tmp`,
-    )
+    const f = filename.toString()
+    this.#tempFilename = path.join(path.dirname(f), `.${path.basename(f)}.tmp`)
   }
 
   read(): string | null {