dprint · scarf005 · Jan 29, 2025
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -1,34 +1,34 @@
-name: CI
-on: [push, pull_request]
-jobs:
-  CI:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      id-token: write
-    steps:
-      - uses: actions/checkout@v4
-      - uses: denoland/setup-deno@v1
-        with:
-          deno-version: v1.x
-      - name: Test
-        run: deno test --allow-net --allow-read=.
-      - name: Publish on tag
-        run: deno run -A jsr:@david/[email protected]
-      - name: Get tag version
-        if: startsWith(github.ref, 'refs/tags/')
-        id: get_tag_version
-        run: echo ::set-output name=TAG_VERSION::${GITHUB_REF/refs\/tags\//}
-      - uses: actions/setup-node@v4
-        with:
-          node-version: '20.x'
-          registry-url: 'https://registry.npmjs.org'
-      - name: npm build
-        run: deno task build:npm ${{steps.get_tag_version.outputs.TAG_VERSION}}
-      - name: npm publish
-        if: startsWith(github.ref, 'refs/tags/')
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-        run: |
-          cd npm
-          npm publish --access public
+name: CI
+on: [push, pull_request]
+jobs:
+  CI:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: denoland/setup-deno@v1
+        with:
+          deno-version: v1.x
+      - name: Test
+        run: deno test --allow-net --allow-read=.
+      - name: Publish on tag
+        run: deno run -A jsr:@david/[email protected]
+      - name: Get tag version
+        if: startsWith(github.ref, 'refs/tags/')
+        id: get_tag_version
+        run: echo ::set-output name=TAG_VERSION::${GITHUB_REF/refs\/tags\//}
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20.x"
+          registry-url: "https://registry.npmjs.org"
+      - name: npm build
+        run: deno task build:npm ${{steps.get_tag_version.outputs.TAG_VERSION}}
+      - name: npm publish
+        if: startsWith(github.ref, 'refs/tags/')
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          cd npm
+          npm publish --access public
diff --git a/README.md b/README.md
@@ -45,7 +45,8 @@ console.log(tsFormatter.formatText({
 }));
 ```
 
-Using with plugins on npm (ex. [@dprint/json](https://www.npmjs.com/package/@dprint/json)):
+Using with plugins on npm (ex.
+[@dprint/json](https://www.npmjs.com/package/@dprint/json)):
 
 ```ts
 import { createFromBuffer } from "@dprint/formatter";

diff --git a/common.ts b/common.ts
@@ -11,7 +11,9 @@ export interface FormatRequest {
 
 export interface Host {
   setInstance(wasmInstance: WebAssembly.Instance): void;
-  setHostFormatter(formatWithHost: ((request: FormatRequest) => string) | undefined): void;
+  setHostFormatter(
+    formatWithHost: ((request: FormatRequest) => string) | undefined,
+  ): void;
   createImportObject(): WebAssembly.Imports;
 }
 
@@ -54,7 +56,10 @@ export interface Formatter {
    * @returns The formatted text.
    * @throws If there is an error formatting.
    */
-  formatText(request: FormatRequest, formatWithHost?: (request: FormatRequest) => string): string;
+  formatText(
+    request: FormatRequest,
+    formatWithHost?: (request: FormatRequest) => string,
+  ): string;
 }
 
 /** Configuration specified for use across plugins. */

diff --git a/mod.ts b/mod.ts
@@ -36,8 +36,8 @@ export async function createStreaming(
     );
   }
   if (
-    typeof WebAssembly.instantiateStreaming === "function"
-    && response.headers.get("content-type") === "application/wasm"
+    typeof WebAssembly.instantiateStreaming === "function" &&
+    response.headers.get("content-type") === "application/wasm"
   ) {
     // deno-lint-ignore no-explicit-any
     const module = await WebAssembly.compileStreaming(response as any);
@@ -58,7 +58,9 @@ export function createFromBuffer(wasmModuleBuffer: BufferSource): Formatter {
   return createFromWasmModule(wasmModule);
 }
 
-export function createFromWasmModule(wasmModule: WebAssembly.Module): Formatter {
+export function createFromWasmModule(
+  wasmModule: WebAssembly.Module,
+): Formatter {
   const version = getModuleVersionOrThrow(wasmModule);
   if (version === 3) {
     const host = v3.createHost();
@@ -81,13 +83,19 @@ export function createFromWasmModule(wasmModule: WebAssembly.Module): Formatter
 function getModuleVersionOrThrow(module: WebAssembly.Module): 3 | 4 {
   const version = getModuleVersion(module);
   if (version == null) {
-    throw new Error("Couldn't determine dprint plugin version. Maybe the js-formatter version is too old?");
+    throw new Error(
+      "Couldn't determine dprint plugin version. Maybe the js-formatter version is too old?",
+    );
   } else if (version === 3 || version === 4) {
     return version;
   } else if (version > 4) {
-    throw new Error(`Unsupported new dprint plugin version '${version}'. Maybe the js-formatter version is too old?`);
+    throw new Error(
+      `Unsupported new dprint plugin version '${version}'. Maybe the js-formatter version is too old?`,
+    );
   } else {
-    throw new Error(`Unsupported old dprint plugin version '${version}'. Please upgrade the plugin.`);
+    throw new Error(
+      `Unsupported old dprint plugin version '${version}'. Please upgrade the plugin.`,
+    );
   }
 }
 

diff --git a/mod_test.ts b/mod_test.ts
@@ -1,6 +1,11 @@
 import { assertEquals } from "@std/assert";
 import * as fs from "node:fs";
-import { createFromBuffer, createStreaming, type Formatter, type GlobalConfiguration } from "./mod.ts";
+import {
+  createFromBuffer,
+  createStreaming,
+  type Formatter,
+  type GlobalConfiguration,
+} from "./mod.ts";
 
 Deno.test("it should create streaming", async () => {
   const formatter = await createStreaming(
@@ -157,7 +162,10 @@ Deno.test("should support v4", () => {
   });
 
   // some special config in this plugin
-  formatter.setConfig({}, { "file_extensions": ["asdf"], "file_names": ["some_name"] });
+  formatter.setConfig({}, {
+    "file_extensions": ["asdf"],
+    "file_names": ["some_name"],
+  });
   assertEquals(formatter.getFileMatchingInfo(), {
     fileExtensions: ["asdf"],
     fileNames: ["some_name"],

diff --git a/scripts/build_npm.ts b/scripts/build_npm.ts
@@ -30,7 +30,10 @@ await build({
   postBuild: () => {
     for (const location of wasmFileLocations) {
       Deno.mkdirSync(location, { recursive: true });
-      Deno.copyFileSync("test/test_plugin_v4.wasm", location + "/test_plugin_v4.wasm");
+      Deno.copyFileSync(
+        "test/test_plugin_v4.wasm",
+        location + "/test_plugin_v4.wasm",
+      );
     }
   },
   package: {

diff --git a/v3.ts b/v3.ts
@@ -1,4 +1,10 @@
-import type { FormatRequest, Formatter, GlobalConfiguration, Host, PluginInfo } from "./common.ts";
+import type {
+  FormatRequest,
+  Formatter,
+  GlobalConfiguration,
+  Host,
+  PluginInfo,
+} from "./common.ts";
 
 const decoder = new TextDecoder();
 const encoder = new TextEncoder();
@@ -8,7 +14,8 @@ const encoder = new TextEncoder();
  */
 export function createHost(): Host {
   let instance: WebAssembly.Instance;
-  let hostFormatter: ((request: FormatRequest) => string) | undefined = undefined;
+  let hostFormatter: ((request: FormatRequest) => string) | undefined =
+    undefined;
 
   let overrideConfig = {};
   let filePath = "";
@@ -37,11 +44,20 @@ export function createHost(): Host {
             resetSharedBuffer(length);
           },
           "host_read_buffer": (pointer: number, length: number) => {
-            sharedBuffer.set(getWasmBufferAtPointer(instance, pointer, length), sharedBufferIndex);
+            sharedBuffer.set(
+              getWasmBufferAtPointer(instance, pointer, length),
+              sharedBufferIndex,
+            );
             sharedBufferIndex += length;
           },
-          "host_write_buffer": (pointer: number, index: number, length: number) => {
-            getWasmBufferAtPointer(instance, pointer, length).set(sharedBuffer.slice(index, index + length));
+          "host_write_buffer": (
+            pointer: number,
+            index: number,
+            length: number,
+          ) => {
+            getWasmBufferAtPointer(instance, pointer, length).set(
+              sharedBuffer.slice(index, index + length),
+            );
           },
           "host_take_file_path": () => {
             filePath = decoder.decode(sharedBuffer);
@@ -108,13 +124,13 @@ export function createFromInstance(
   const pluginSchemaVersion = get_plugin_schema_version();
   const expectedPluginSchemaVersion = 3;
   if (
-    pluginSchemaVersion !== 2
-    && pluginSchemaVersion !== expectedPluginSchemaVersion
+    pluginSchemaVersion !== 2 &&
+    pluginSchemaVersion !== expectedPluginSchemaVersion
   ) {
     throw new Error(
-      `Not compatible plugin. `
-        + `Expected schema ${expectedPluginSchemaVersion}, `
-        + `but plugin had ${pluginSchemaVersion}.`,
+      `Not compatible plugin. ` +
+        `Expected schema ${expectedPluginSchemaVersion}, ` +
+        `but plugin had ${pluginSchemaVersion}.`,
     );
   }
 
@@ -136,7 +152,9 @@ export function createFromInstance(
     },
     getFileMatchingInfo() {
       const length = get_plugin_info();
-      const pluginInfo = JSON.parse(receiveString(wasmInstance, length)) as PluginInfo;
+      const pluginInfo = JSON.parse(
+        receiveString(wasmInstance, length),
+      ) as PluginInfo;
       return {
         // deno-lint-ignore no-explicit-any
         fileExtensions: (pluginInfo as any).fileExtensions ?? [],
@@ -229,7 +247,11 @@ function sendString(wasmInstance: WebAssembly.Instance, text: string) {
   let index = 0;
   while (index < length) {
     const writeCount = Math.min(length - index, memoryBufferSize);
-    const wasmBuffer = getWasmBufferAtPointer(wasmInstance, memoryBufferPointer, writeCount);
+    const wasmBuffer = getWasmBufferAtPointer(
+      wasmInstance,
+      memoryBufferPointer,
+      writeCount,
+    );
     wasmBuffer.set(encodedText.slice(index, index + writeCount));
     exports.add_to_shared_bytes_from_buffer(writeCount);
     index += writeCount;
@@ -249,19 +271,29 @@ function receiveString(wasmInstance: WebAssembly.Instance, length: number) {
   while (index < length) {
     const readCount = Math.min(length - index, memoryBufferSize);
     exports.set_buffer_with_shared_bytes(index, readCount);
-    const wasmBuffer = getWasmBufferAtPointer(wasmInstance, memoryBufferPointer, readCount);
+    const wasmBuffer = getWasmBufferAtPointer(
+      wasmInstance,
+      memoryBufferPointer,
+      readCount,
+    );
     buffer.set(wasmBuffer, index);
     index += readCount;
   }
   return decoder.decode(buffer);
 }
 
-function getWasmMemoryBufferPointer(wasmInstance: WebAssembly.Instance): number {
+function getWasmMemoryBufferPointer(
+  wasmInstance: WebAssembly.Instance,
+): number {
   // deno-lint-ignore no-explicit-any
   return (wasmInstance.exports as any).get_wasm_memory_buffer();
 }
 
-function getWasmBufferAtPointer(wasmInstance: WebAssembly.Instance, pointer: number, length: number) {
+function getWasmBufferAtPointer(
+  wasmInstance: WebAssembly.Instance,
+  pointer: number,
+  length: number,
+) {
   return new Uint8Array(
     // deno-lint-ignore no-explicit-any
     (wasmInstance.exports.memory as any).buffer,

diff --git a/v4.ts b/v4.ts
@@ -1,4 +1,10 @@
-import type { FormatRequest, Formatter, GlobalConfiguration, Host, PluginInfo } from "./common.ts";
+import type {
+  FormatRequest,
+  Formatter,
+  GlobalConfiguration,
+  Host,
+  PluginInfo,
+} from "./common.ts";
 import type { FileMatchingInfo } from "./mod.ts";
 
 const decoder = new TextDecoder();
@@ -25,7 +31,8 @@ export function createHost(): Host {
   }
 
   let instance: WebAssembly.Instance;
-  let hostFormatter: ((request: FormatRequest) => string) | undefined = undefined;
+  let hostFormatter: ((request: FormatRequest) => string) | undefined =
+    undefined;
   let formattedText = "";
   let errorText = "";
 
@@ -57,7 +64,11 @@ export function createHost(): Host {
               const iovecBufPtr = dataView.getUint32(iovsOffset, true);
               const iovecBufLen = dataView.getUint32(iovsOffset + 4, true);
 
-              const buf = new Uint8Array(wasmMemoryBuffer, iovecBufPtr, iovecBufLen);
+              const buf = new Uint8Array(
+                wasmMemoryBuffer,
+                iovecBufPtr,
+                iovecBufLen,
+              );
 
               if (fd === 1 || fd === 2) {
                 // just write both stdout and stderr to stderr
@@ -77,7 +88,9 @@ export function createHost(): Host {
         dprint: {
           "host_has_cancelled": () => 0,
           "host_write_buffer": (pointer: number) => {
-            getWasmBufferAtPointer(instance, pointer, sharedBuffer.length).set(sharedBuffer);
+            getWasmBufferAtPointer(instance, pointer, sharedBuffer.length).set(
+              sharedBuffer,
+            );
           },
           "host_format": (
             filePathPtr: number,
@@ -90,9 +103,14 @@ export function createHost(): Host {
             fileBytesLen: number,
           ) => {
             const filePath = receiveString(filePathPtr, filePathLen);
-            const overrideConfigRaw = receiveString(overrideConfigPtr, overrideConfigLen);
+            const overrideConfigRaw = receiveString(
+              overrideConfigPtr,
+              overrideConfigLen,
+            );
 
-            const overrideConfig = overrideConfigRaw === "" ? {} : JSON.parse(overrideConfigRaw);
+            const overrideConfig = overrideConfigRaw === ""
+              ? {}
+              : JSON.parse(overrideConfigRaw);
             const fileText = receiveString(fileBytesPtr, fileBytesLen);
             const bytesRange = rangeStart === 0 && rangeEnd === fileBytesLen
               ? undefined
@@ -248,7 +266,11 @@ export function createFromInstance(
   }
 }
 
-function getWasmBufferAtPointer(wasmInstance: WebAssembly.Instance, pointer: number, length: number) {
+function getWasmBufferAtPointer(
+  wasmInstance: WebAssembly.Instance,
+  pointer: number,
+  length: number,
+) {
   return new Uint8Array(
     // deno-lint-ignore no-explicit-any
     (wasmInstance.exports.memory as any).buffer,