diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 00000000..3b5b9123
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,14 @@
+{
+  "extends": "./node_modules/gts/",
+  "rules": {
+    "@typescript-eslint/explicit-function-return-type": [
+      "error",
+      {"allowExpressions": true}
+    ],
+    "func-style": ["error", "declaration"],
+    "prefer-const": ["error", {"destructuring": "all"}],
+    // It would be nice to sort import declaration order as well, but that's not
+    // autofixable and it's not worth the effort of handling manually.
+    "sort-imports": ["error", {"ignoreDeclarationSort": true}],
+  }
+}
diff --git a/.eslintrc.json b/.eslintrc.json
deleted file mode 100644
index d4323578..00000000
--- a/.eslintrc.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "extends": "./node_modules/gts/",
-  "rules": {
-    "prefer-const": ["error", {"destructuring": "all"}]
-  }
-}
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index aff82a10..782a0ad7 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,3 +4,7 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d75baccf..dd3614a3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,8 +18,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 'lts/*'
           check-latest: true
@@ -46,8 +46,8 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           check-latest: true
@@ -89,10 +89,10 @@ jobs:
             node_version: lts/-2
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dart-lang/setup-dart@v1
         with: {sdk: stable}
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with: {node-version: "${{ matrix.node_version }}"}
 
       - name: Check out Dart Sass
@@ -140,8 +140,8 @@ jobs:
     needs: [static_analysis, tests, sass_spec]
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 'lts/*'
           check-latest: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d06b712f..8533ae1c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,39 @@
+## 1.77.8
+
+* No user-visible changes.
+
+## 1.77.7
+
+* Declarations that appear after nested rules are deprecated, because the
+  semantics Sass has historically used are different from the semantics
+  specified by CSS. In the future, Sass will adopt the standard CSS semantics.
+
+  See [the Sass website](https://sass-lang.com/d/mixed-decls) for details.
+
+* **Potentially breaking bug fix:** `//` in certain places such as unknown
+  at-rule values was being preserved in the CSS output, leading to potentially
+  invalid CSS. It's now properly parsed as a silent comment and omitted from the
+  CSS output.
+
+## 1.77.6
+
+* Fix a few cases where comments and occasionally even whitespace wasn't allowed
+  between the end of Sass statements and the following semicolon.
+
+## 1.77.5
+
+* Fully trim redundant selectors generated by `@extend`.
+
+## 1.77.4
+
+### Embedded Sass
+
+* Support passing `Version` input for `fatalDeprecations` as string over
+  embedded protocol.
+
+* Fix a bug in the JS Embedded Host where `Version` could be incorrectly accepted
+  as input for `silenceDeprecations` and `futureDeprecations` in pure JS.
+
 ## 1.77.3
 
 ### Dart API
diff --git a/bin/sass.ts b/bin/sass.ts
new file mode 100755
index 00000000..d25d834a
--- /dev/null
+++ b/bin/sass.ts
@@ -0,0 +1,25 @@
+#!/usr/bin/env node
+
+import * as child_process from 'child_process';
+import {compilerCommand} from '../lib/src/compiler-path';
+
+// TODO npm/cmd-shim#152 and yarnpkg/berry#6422 - If and when the package
+// managers support it, we should make this a proper shell script rather than a
+// JS wrapper.
+
+try {
+  child_process.execFileSync(
+    compilerCommand[0],
+    [...compilerCommand.slice(1), ...process.argv.slice(2)],
+    {
+      stdio: 'inherit',
+      windowsHide: true,
+    }
+  );
+} catch (error) {
+  if (error.code) {
+    throw error;
+  } else {
+    process.exitCode = error.status;
+  }
+}
diff --git a/lib/src/compiler-path.ts b/lib/src/compiler-path.ts
index 60675e5b..0097ac28 100644
--- a/lib/src/compiler-path.ts
+++ b/lib/src/compiler-path.ts
@@ -4,20 +4,29 @@
 
 import * as fs from 'fs';
 import * as p from 'path';
+import {getElfInterpreter} from './elf';
 import {isErrnoException} from './utils';
 
 /**
- * Detect if the current running node binary is linked with musl libc by
- * checking if the binary contains a string like "/.../ld-musl-$ARCH.so"
+ * Detect if the given binary is linked with musl libc by checking if
+ * the interpreter basename starts with "ld-musl-"
  */
-const isLinuxMusl = function () {
-  return fs.readFileSync(process.execPath).includes('/ld-musl-');
-};
+function isLinuxMusl(path: string): boolean {
+  try {
+    const interpreter = getElfInterpreter(path);
+    return p.basename(interpreter).startsWith('ld-musl-');
+  } catch (error) {
+    console.warn(
+      `Warning: Failed to detect linux-musl, fallback to linux-gnu: ${error.message}`
+    );
+    return false;
+  }
+}
 
 /** The full command for the embedded compiler executable. */
 export const compilerCommand = (() => {
   const platform =
-    process.platform === 'linux' && isLinuxMusl()
+    process.platform === 'linux' && isLinuxMusl(process.execPath)
       ? 'linux-musl'
       : (process.platform as string);
 
diff --git a/lib/src/compiler.test.ts b/lib/src/compiler.test.ts
index 58fbc61f..df72f27e 100644
--- a/lib/src/compiler.test.ts
+++ b/lib/src/compiler.test.ts
@@ -9,7 +9,7 @@ import * as compilerModule from './compiler/utils';
 import {Compiler, initCompiler} from './compiler/sync';
 
 const createDispatcher = jest.spyOn(compilerModule, 'createDispatcher');
-function getIdHistory() {
+function getIdHistory(): number[] {
   return createDispatcher.mock.calls.map(([id]) => id);
 }
 
diff --git a/lib/src/compiler/utils.ts b/lib/src/compiler/utils.ts
index 09fa031d..80e1e0fc 100644
--- a/lib/src/compiler/utils.ts
+++ b/lib/src/compiler/utils.ts
@@ -4,7 +4,7 @@
 
 import * as p from 'path';
 import * as supportsColor from 'supports-color';
-import {deprecations, getDeprecationIds, Deprecation} from '../deprecations';
+import {Deprecation, deprecations, getDeprecationIds} from '../deprecations';
 import {deprotofySourceSpan} from '../deprotofy-span';
 import {Dispatcher, DispatcherHandlers} from '../dispatcher';
 import {Exception} from '../exception';
diff --git a/lib/src/deprecations.ts b/lib/src/deprecations.ts
index e30527c4..26341d82 100644
--- a/lib/src/deprecations.ts
+++ b/lib/src/deprecations.ts
@@ -2,26 +2,12 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {deprecations} from './vendor/deprecations';
-import {Deprecation, DeprecationOrId} from './vendor/sass';
+import {DeprecationOrId} from './vendor/sass';
 import {Version} from './version';
 
 export {deprecations} from './vendor/deprecations';
 export {Deprecation, DeprecationOrId, DeprecationStatus} from './vendor/sass';
 
-/**
- * Returns whether the given deprecation was active in the given version.
- */
-function isActiveIn(deprecation: Deprecation, version: Version) {
-  const deprecatedIn = deprecation.deprecatedIn;
-  if (deprecation.status !== 'active' || !deprecatedIn) return false;
-  if (version.major > deprecatedIn.major) return true;
-  if (version.major < deprecatedIn.major) return false;
-  if (version.minor > deprecatedIn.minor) return true;
-  if (version.minor < deprecatedIn.minor) return false;
-  return version.patch >= deprecatedIn.patch;
-}
-
 /**
  * Converts a mixed array of deprecations, IDs, and versions to an array of IDs
  * that's ready to include in a CompileRequest.
@@ -31,9 +17,7 @@ export function getDeprecationIds(
 ): string[] {
   return arr.flatMap(item => {
     if (item instanceof Version) {
-      return Object.values(deprecations)
-        .filter(deprecation => isActiveIn(deprecation, item))
-        .map(deprecation => deprecation.id);
+      return arr.map(item => item.toString());
     } else if (typeof item === 'string') {
       return item;
     }
diff --git a/lib/src/dispatcher.ts b/lib/src/dispatcher.ts
index a99dee96..48cafefb 100644
--- a/lib/src/dispatcher.ts
+++ b/lib/src/dispatcher.ts
@@ -8,7 +8,7 @@ import {filter, map, mergeMap, takeUntil} from 'rxjs/operators';
 import {OutboundResponse} from './messages';
 import * as proto from './vendor/embedded_sass_pb';
 import {RequestTracker} from './request-tracker';
-import {PromiseOr, compilerError, thenOr, hostError} from './utils';
+import {PromiseOr, compilerError, hostError, thenOr} from './utils';
 
 // A callback that accepts a response or error.
 type ResponseCallback = (
diff --git a/lib/src/elf.ts b/lib/src/elf.ts
new file mode 100644
index 00000000..1cd396a6
--- /dev/null
+++ b/lib/src/elf.ts
@@ -0,0 +1,102 @@
+// Copyright 2024 Google LLC. Use of this source code is governed by an
+// MIT-style license that can be found in the LICENSE file or at
+// https://opensource.org/licenses/MIT.
+
+import * as fs from 'fs';
+
+/** Read a chunk of data from a file descriptor into a new Buffer. */
+function readFileDescriptor(
+  fd: number,
+  position: number,
+  length: number
+): Buffer {
+  const buffer = Buffer.alloc(length);
+  let offset = 0;
+  while (offset < length) {
+    const bytesRead = fs.readSync(fd, buffer, {
+      offset: offset,
+      position: position + offset,
+    });
+    if (bytesRead === 0) {
+      throw new Error(`failed to read fd ${fd}`);
+    }
+
+    offset += bytesRead;
+  }
+  return buffer;
+}
+
+/** Parse an ELF file and return its interpreter. */
+export function getElfInterpreter(path: string): string {
+  const fd = fs.openSync(path, 'r');
+  try {
+    const elfIdentification = new DataView(
+      readFileDescriptor(fd, 0, 64).buffer
+    );
+
+    if (
+      elfIdentification.getUint8(0) !== 0x7f ||
+      elfIdentification.getUint8(1) !== 0x45 ||
+      elfIdentification.getUint8(2) !== 0x4c ||
+      elfIdentification.getUint8(3) !== 0x46
+    ) {
+      throw new Error(`${path} is not an ELF file.`);
+    }
+
+    const elfIdentificationClass = elfIdentification.getUint8(4);
+    if (elfIdentificationClass !== 1 && elfIdentificationClass !== 2) {
+      throw new Error(`${path} has an invalid ELF class.`);
+    }
+    const elfClass32 = elfIdentificationClass === 1;
+
+    const elfIdentificationData = elfIdentification.getUint8(5);
+    if (elfIdentificationData !== 1 && elfIdentificationData !== 2) {
+      throw new Error(`${path} has an invalid endianness.`);
+    }
+    const littleEndian = elfIdentificationData === 1;
+
+    // Converting BigUint64 to Number because node Buffer length has to be
+    // number type, and we don't expect any elf we check with this method to
+    // be larger than 9007199254740991 bytes.
+    const programHeadersOffset = elfClass32
+      ? elfIdentification.getUint32(28, littleEndian)
+      : Number(elfIdentification.getBigUint64(32, littleEndian));
+    const programHeadersEntrySize = elfClass32
+      ? elfIdentification.getUint16(42, littleEndian)
+      : elfIdentification.getUint16(54, littleEndian);
+    const programHeadersEntryCount = elfClass32
+      ? elfIdentification.getUint16(44, littleEndian)
+      : elfIdentification.getUint16(56, littleEndian);
+
+    const programHeaders = new DataView(
+      readFileDescriptor(
+        fd,
+        programHeadersOffset,
+        programHeadersEntrySize * programHeadersEntryCount
+      ).buffer
+    );
+    for (let i = 0; i < programHeadersEntryCount; i++) {
+      const byteOffset = i * programHeadersEntrySize;
+      const segmentType = programHeaders.getUint32(byteOffset, littleEndian);
+      if (segmentType !== 3) continue; // 3 is PT_INTERP, the interpreter
+
+      const segmentOffset = elfClass32
+        ? programHeaders.getUint32(byteOffset + 4, littleEndian)
+        : Number(programHeaders.getBigUint64(byteOffset + 8, littleEndian));
+      const segmentFileSize = elfClass32
+        ? programHeaders.getUint32(byteOffset + 16, littleEndian)
+        : Number(programHeaders.getBigUint64(byteOffset + 32, littleEndian));
+
+      const buffer = readFileDescriptor(fd, segmentOffset, segmentFileSize);
+      if (buffer[segmentFileSize - 1] !== 0) {
+        throw new Error(`${path} is corrupted.`);
+      }
+
+      return buffer.toString('utf8', 0, segmentFileSize - 1);
+    }
+
+    throw new Error(`${path} does not contain an interpreter entry.`);
+  } finally {
+    fs.closeSync(fd);
+  }
+}
diff --git a/lib/src/exception.ts b/lib/src/exception.ts
index 48eb6dfd..3e00f40e 100644
--- a/lib/src/exception.ts
+++ b/lib/src/exception.ts
@@ -19,7 +19,7 @@ export class Exception extends Error implements SassException {
     this.span = deprotofySourceSpan(failure.span!);
   }
 
-  toString() {
+  toString(): string {
     return this.message;
   }
 }
diff --git a/lib/src/importer-registry.ts b/lib/src/importer-registry.ts
index 749a912b..691b4af2 100644
--- a/lib/src/importer-registry.ts
+++ b/lib/src/importer-registry.ts
@@ -11,7 +11,7 @@ import {CanonicalizeContext} from './canonicalize-context';
 import * as utils from './utils';
 import {FileImporter, Importer, Options} from './vendor/sass';
 import * as proto from './vendor/embedded_sass_pb';
-import {catchOr, thenOr, PromiseOr} from './utils';
+import {PromiseOr, catchOr, thenOr} from './utils';
 
 const entryPointDirectoryKey = Symbol();
 
diff --git a/lib/src/legacy/importer.ts b/lib/src/legacy/importer.ts
index 5977a3d5..68b79e11 100644
--- a/lib/src/legacy/importer.ts
+++ b/lib/src/legacy/importer.ts
@@ -9,11 +9,11 @@ import * as util from 'util';
 
 import {resolvePath} from './resolve-path';
 import {
+  PromiseOr,
+  SyncBoolean,
   fileUrlToPathCrossPlatform,
   isErrnoException,
   thenOr,
-  PromiseOr,
-  SyncBoolean,
 } from '../utils';
 import {
   Importer,
@@ -26,10 +26,10 @@ import {
   LegacySyncImporter,
 } from '../vendor/sass';
 import {
-  pathToLegacyFileUrl,
   legacyFileUrlToPath,
   legacyImporterProtocol,
   legacyImporterProtocolPrefix,
+  pathToLegacyFileUrl,
 } from './utils';
 
 /**
diff --git a/lib/src/legacy/index.ts b/lib/src/legacy/index.ts
index d7543e35..f5467565 100644
--- a/lib/src/legacy/index.ts
+++ b/lib/src/legacy/index.ts
@@ -4,7 +4,7 @@
 
 import * as fs from 'fs';
 import * as p from 'path';
-import {pathToFileURL, URL} from 'url';
+import {URL, pathToFileURL} from 'url';
 import {NodePackageImporter} from '../importer-registry';
 
 import {Exception} from '../exception';
@@ -15,11 +15,11 @@ import {
   compileStringAsync,
 } from '../compile';
 import {
+  SyncBoolean,
   fileUrlToPathCrossPlatform,
   isNullOrUndefined,
   pathToUrlString,
   withoutExtension,
-  SyncBoolean,
 } from '../utils';
 import {
   CompileResult,
@@ -32,11 +32,9 @@ import {
   LegacyStringOptions,
   Options,
   StringOptions,
-  Importer,
-  FileImporter,
 } from '../vendor/sass';
 import {wrapFunction} from './value/wrap';
-import {endOfLoadProtocol, LegacyImporterWrapper} from './importer';
+import {LegacyImporterWrapper, endOfLoadProtocol} from './importer';
 import {
   legacyImporterProtocol,
   pathToLegacyFileUrl,
diff --git a/lib/src/legacy/value/wrap.ts b/lib/src/legacy/value/wrap.ts
index 178da2ec..7da2e1cd 100644
--- a/lib/src/legacy/value/wrap.ts
+++ b/lib/src/legacy/value/wrap.ts
@@ -42,7 +42,7 @@ export function wrapFunction<sync extends 'sync' | 'async'>(
   } else {
     return args =>
       new Promise((resolve, reject) => {
-        const done = (result: unknown) => {
+        function done(result: unknown): void {
           try {
             if (result instanceof Error) {
               reject(result);
@@ -52,7 +52,7 @@ export function wrapFunction<sync extends 'sync' | 'async'>(
           } catch (error: unknown) {
             reject(error);
           }
-        };
+        }
 
         // The cast here is necesary to work around microsoft/TypeScript#33815.
         const syncResult = (callback as (...args: unknown[]) => unknown).apply(
diff --git a/lib/src/message-transformer.test.ts b/lib/src/message-transformer.test.ts
index d74f2e28..767999c9 100644
--- a/lib/src/message-transformer.test.ts
+++ b/lib/src/message-transformer.test.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {Subject, Observable} from 'rxjs';
+import {Observable, Subject} from 'rxjs';
 import * as varint from 'varint';
 
 import {expectObservableToError} from '../../test/utils';
diff --git a/lib/src/packet-transformer.test.ts b/lib/src/packet-transformer.test.ts
index 4533f002..78297883 100644
--- a/lib/src/packet-transformer.test.ts
+++ b/lib/src/packet-transformer.test.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {Subject, Observable} from 'rxjs';
+import {Observable, Subject} from 'rxjs';
 
 import {PacketTransformer} from './packet-transformer';
 
@@ -55,7 +55,7 @@ describe('packet transformer', () => {
   describe('decode', () => {
     let rawBuffers$: Subject<Buffer>;
 
-    function expectDecoding(expected: Buffer[], done: () => void) {
+    function expectDecoding(expected: Buffer[], done: () => void): void {
       const actual: Buffer[] = [];
       packets.outboundProtobufs$.subscribe({
         next: protobuf => actual.push(protobuf),
diff --git a/lib/src/protofier.ts b/lib/src/protofier.ts
index 8b3acd7c..c9c28e39 100644
--- a/lib/src/protofier.ts
+++ b/lib/src/protofier.ts
@@ -10,19 +10,19 @@ import {FunctionRegistry} from './function-registry';
 import {SassArgumentList} from './value/argument-list';
 import {SassColor, KnownColorSpace} from './value/color';
 import {SassFunction} from './value/function';
-import {SassList, ListSeparator} from './value/list';
+import {ListSeparator, SassList} from './value/list';
 import {SassMap} from './value/map';
 import {SassNumber} from './value/number';
 import {SassString} from './value/string';
 import {Value} from './value';
 import {sassNull} from './value/null';
-import {sassTrue, sassFalse} from './value/boolean';
+import {sassFalse, sassTrue} from './value/boolean';
 import {
-  CalculationValue,
-  SassCalculation,
   CalculationInterpolation,
   CalculationOperation,
   CalculationOperator,
+  CalculationValue,
+  SassCalculation,
 } from './value/calculations';
 import {SassMixin} from './value/mixin';
 
diff --git a/lib/src/request-tracker.ts b/lib/src/request-tracker.ts
index f26db4ca..200f51c1 100644
--- a/lib/src/request-tracker.ts
+++ b/lib/src/request-tracker.ts
@@ -16,7 +16,7 @@ export class RequestTracker {
   > = [];
 
   /** The next available request ID. */
-  get nextId() {
+  get nextId(): number {
     for (let i = 0; i < this.requests.length; i++) {
       if (this.requests[i] === undefined || this.requests[i] === null) {
         return i;
@@ -32,7 +32,7 @@ export class RequestTracker {
   add(
     id: number,
     expectedResponseType: InboundResponseType | OutboundResponseType
-  ) {
+  ): void {
     if (id < 0) {
       throw Error(`Invalid request ID ${id}.`);
     } else if (this.requests[id]) {
@@ -47,7 +47,7 @@ export class RequestTracker {
    * Resolves a pending request with matching ID `id` and expected response type
    * `type`. Throws an error if the Protocol Error is violated.
    */
-  resolve(id: number, type: InboundResponseType | OutboundResponseType) {
+  resolve(id: number, type: InboundResponseType | OutboundResponseType): void {
     if (this.requests[id] === undefined || this.requests[id] === null) {
       throw Error(`Response ID ${id} does not match any pending requests.`);
     } else if (this.requests[id] !== type) {
diff --git a/lib/src/sync-process/sync-message-port.ts b/lib/src/sync-process/sync-message-port.ts
index 6c4a8751..7c82a343 100644
--- a/lib/src/sync-process/sync-message-port.ts
+++ b/lib/src/sync-process/sync-message-port.ts
@@ -5,10 +5,10 @@
 import {strict as assert} from 'assert';
 import {EventEmitter} from 'events';
 import {
-  receiveMessageOnPort,
   MessageChannel,
   MessagePort,
   TransferListItem,
+  receiveMessageOnPort,
 } from 'worker_threads';
 
 // TODO(nex3): Make this its own package.
diff --git a/lib/src/sync-process/worker.ts b/lib/src/sync-process/worker.ts
index 2b6e4c13..89542961 100644
--- a/lib/src/sync-process/worker.ts
+++ b/lib/src/sync-process/worker.ts
@@ -3,12 +3,12 @@
 // https://opensource.org/licenses/MIT.
 
 import {
-  parentPort,
-  workerData,
   MessagePort,
   TransferListItem,
+  parentPort,
+  workerData,
 } from 'worker_threads';
-import {spawn, SpawnOptionsWithoutStdio} from 'child_process';
+import {SpawnOptionsWithoutStdio, spawn} from 'child_process';
 import {strict as assert} from 'assert';
 
 import {SyncMessagePort} from './sync-message-port';
diff --git a/lib/src/value/argument-list.ts b/lib/src/value/argument-list.ts
index b898796a..029e2658 100644
--- a/lib/src/value/argument-list.ts
+++ b/lib/src/value/argument-list.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {isOrderedMap, List, OrderedMap} from 'immutable';
+import {List, OrderedMap, isOrderedMap} from 'immutable';
 
 import {ListSeparator, SassList} from './list';
 import {Value} from './index';
diff --git a/lib/src/value/calculations.ts b/lib/src/value/calculations.ts
index ce32f610..7f4c2a4e 100644
--- a/lib/src/value/calculations.ts
+++ b/lib/src/value/calculations.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {hash, List, ValueObject} from 'immutable';
+import {List, ValueObject, hash} from 'immutable';
 
 import {Value} from './index';
 import {SassNumber} from './number';
@@ -23,9 +23,12 @@ function assertCalculationValue(value: CalculationValue): void {
   }
 }
 
-const isValidClampArg = (value: CalculationValue): boolean =>
-  value instanceof CalculationInterpolation ||
-  (value instanceof SassString && !value.hasQuotes);
+function isValidClampArg(value: CalculationValue): boolean {
+  return (
+    value instanceof CalculationInterpolation ||
+    (value instanceof SassString && !value.hasQuotes)
+  );
+}
 
 /* A SassScript calculation */
 export class SassCalculation extends Value {
diff --git a/lib/src/value/list.ts b/lib/src/value/list.ts
index 97ec57d8..d8175bb0 100644
--- a/lib/src/value/list.ts
+++ b/lib/src/value/list.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {hash, isList, List} from 'immutable';
+import {List, hash, isList} from 'immutable';
 
 import {Value} from './index';
 import {SassMap} from './map';
diff --git a/lib/src/value/number.ts b/lib/src/value/number.ts
index 9bf26cc8..11d69e56 100644
--- a/lib/src/value/number.ts
+++ b/lib/src/value/number.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {hash, List} from 'immutable';
+import {List, hash} from 'immutable';
 
 import {asImmutableList, valueError} from '../utils';
 import {Value} from './index';
diff --git a/lib/src/value/utils.ts b/lib/src/value/utils.ts
index 18584bfb..d40ed98c 100644
--- a/lib/src/value/utils.ts
+++ b/lib/src/value/utils.ts
@@ -116,7 +116,7 @@ export function fuzzyAssertInRange(
 }
 
 /** Returns `dividend % modulus`, but always in the range `[0, modulus)`. */
-export function positiveMod(dividend: number, modulus: number) {
+export function positiveMod(dividend: number, modulus: number): number {
   const result = dividend % modulus;
   return result < 0 ? result + modulus : result;
 }
diff --git a/lib/src/version.ts b/lib/src/version.ts
index 772b8258..79f61371 100644
--- a/lib/src/version.ts
+++ b/lib/src/version.ts
@@ -21,4 +21,7 @@ export class Version implements api.Version {
       parseInt(match[3])
     );
   }
+  toString(): string {
+    return `${this.major}.${this.minor}.${this.patch}`;
+  }
 }
diff --git a/npm/android-arm/package.json b/npm/android-arm/package.json
index 31001aef..8d467a14 100644
--- a/npm/android-arm/package.json
+++ b/npm/android-arm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-android-arm",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The android-arm binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "android"
   ],
diff --git a/npm/android-arm64/package.json b/npm/android-arm64/package.json
index 849f79d7..6648630f 100644
--- a/npm/android-arm64/package.json
+++ b/npm/android-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-android-arm64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The android-arm64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "android"
   ],
diff --git a/npm/android-ia32/package.json b/npm/android-ia32/package.json
index beeeba0d..4d9c9bc4 100644
--- a/npm/android-ia32/package.json
+++ b/npm/android-ia32/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-android-ia32",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The android-ia32 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "android"
   ],
diff --git a/npm/android-riscv64/README.md b/npm/android-riscv64/README.md
new file mode 100644
index 00000000..5c79fe81
--- /dev/null
+++ b/npm/android-riscv64/README.md
@@ -0,0 +1,3 @@
+# `sass-embedded-android-riscv64`
+
+This is the **android-riscv64** binary for [`sass-embedded`](https://www.npmjs.com/package/sass-embedded)
diff --git a/npm/android-riscv64/package.json b/npm/android-riscv64/package.json
new file mode 100644
index 00000000..7096a34d
--- /dev/null
+++ b/npm/android-riscv64/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "sass-embedded-android-riscv64",
+  "version": "1.77.8",
+  "description": "The android-riscv64 binary for sass-embedded",
+  "repository": "sass/embedded-host-node",
+  "author": "Google Inc.",
+  "license": "MIT",
+  "files": [
+    "dart-sass/**/*"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
+  "os": [
+    "android"
+  ],
+  "cpu": [
+    "riscv64"
+  ]
+}
diff --git a/npm/android-x64/package.json b/npm/android-x64/package.json
index 825f950c..598f2308 100644
--- a/npm/android-x64/package.json
+++ b/npm/android-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-android-x64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The android-x64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "android"
   ],
diff --git a/npm/darwin-arm64/package.json b/npm/darwin-arm64/package.json
index fcfc9f1d..08a81de6 100644
--- a/npm/darwin-arm64/package.json
+++ b/npm/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-darwin-arm64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The darwin-arm64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "darwin"
   ],
diff --git a/npm/darwin-x64/package.json b/npm/darwin-x64/package.json
index a3b9b1e3..e3428f50 100644
--- a/npm/darwin-x64/package.json
+++ b/npm/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-darwin-x64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The darwin-x64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "darwin"
   ],
diff --git a/npm/linux-arm/package.json b/npm/linux-arm/package.json
index 45f56274..dd910307 100644
--- a/npm/linux-arm/package.json
+++ b/npm/linux-arm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-arm",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-arm binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "linux"
   ],
diff --git a/npm/linux-arm64/package.json b/npm/linux-arm64/package.json
index 61d82dd5..9cd90d34 100644
--- a/npm/linux-arm64/package.json
+++ b/npm/linux-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-arm64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-arm64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "linux"
   ],
diff --git a/npm/linux-ia32/package.json b/npm/linux-ia32/package.json
index 82a27457..48356826 100644
--- a/npm/linux-ia32/package.json
+++ b/npm/linux-ia32/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-ia32",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-ia32 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "linux"
   ],
diff --git a/npm/linux-musl-arm/package.json b/npm/linux-musl-arm/package.json
index 0ed6b12c..24ace4f8 100644
--- a/npm/linux-musl-arm/package.json
+++ b/npm/linux-musl-arm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-musl-arm",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-musl-arm binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
diff --git a/npm/linux-musl-arm64/package.json b/npm/linux-musl-arm64/package.json
index c7192ad7..a1ffe55e 100644
--- a/npm/linux-musl-arm64/package.json
+++ b/npm/linux-musl-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-musl-arm64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-musl-arm64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
diff --git a/npm/linux-musl-ia32/package.json b/npm/linux-musl-ia32/package.json
index a6726169..60746951 100644
--- a/npm/linux-musl-ia32/package.json
+++ b/npm/linux-musl-ia32/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-musl-ia32",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-musl-ia32 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
diff --git a/npm/linux-musl-riscv64/README.md b/npm/linux-musl-riscv64/README.md
new file mode 100644
index 00000000..b66e939f
--- /dev/null
+++ b/npm/linux-musl-riscv64/README.md
@@ -0,0 +1,3 @@
+# `sass-embedded-linux-musl-riscv64`
+
+This is the **linux-musl-riscv64** binary for [`sass-embedded`](https://www.npmjs.com/package/sass-embedded)
diff --git a/npm/linux-musl-riscv64/package.json b/npm/linux-musl-riscv64/package.json
new file mode 100644
index 00000000..c4cd9bbc
--- /dev/null
+++ b/npm/linux-musl-riscv64/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "sass-embedded-linux-musl-riscv64",
+  "version": "1.77.8",
+  "description": "The linux-musl-riscv64 binary for sass-embedded",
+  "repository": "sass/embedded-host-node",
+  "author": "Google Inc.",
+  "license": "MIT",
+  "files": [
+    "dart-sass/**/*"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
+  "os": [
+    "linux"
+  ],
+  "cpu": [
+    "riscv64"
+  ]
+}
diff --git a/npm/linux-musl-x64/package.json b/npm/linux-musl-x64/package.json
index 0d8d06d8..ac4afa94 100644
--- a/npm/linux-musl-x64/package.json
+++ b/npm/linux-musl-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-musl-x64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-musl-x64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
diff --git a/npm/linux-riscv64/README.md b/npm/linux-riscv64/README.md
new file mode 100644
index 00000000..70bf2c32
--- /dev/null
+++ b/npm/linux-riscv64/README.md
@@ -0,0 +1,3 @@
+# `sass-embedded-linux-riscv64`
+
+This is the **linux-riscv64** binary for [`sass-embedded`](https://www.npmjs.com/package/sass-embedded)
diff --git a/npm/linux-riscv64/package.json b/npm/linux-riscv64/package.json
new file mode 100644
index 00000000..332e08b5
--- /dev/null
+++ b/npm/linux-riscv64/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "sass-embedded-linux-riscv64",
+  "version": "1.77.8",
+  "description": "The linux-riscv64 binary for sass-embedded",
+  "repository": "sass/embedded-host-node",
+  "author": "Google Inc.",
+  "license": "MIT",
+  "files": [
+    "dart-sass/**/*"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
+  "os": [
+    "linux"
+  ],
+  "cpu": [
+    "riscv64"
+  ]
+}
diff --git a/npm/linux-x64/package.json b/npm/linux-x64/package.json
index 5db3156b..308a38fb 100644
--- a/npm/linux-x64/package.json
+++ b/npm/linux-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-linux-x64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The linux-x64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass"
-  },
   "os": [
     "linux"
   ],
diff --git a/npm/win32-arm64/package.json b/npm/win32-arm64/package.json
index 9f6ee597..27a53b3b 100644
--- a/npm/win32-arm64/package.json
+++ b/npm/win32-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-win32-arm64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The win32-arm64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass.bat"
-  },
   "os": [
     "win32"
   ],
diff --git a/npm/win32-ia32/package.json b/npm/win32-ia32/package.json
index 40fa2ee2..97b1df67 100644
--- a/npm/win32-ia32/package.json
+++ b/npm/win32-ia32/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-win32-ia32",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The win32-ia32 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass.bat"
-  },
   "os": [
     "win32"
   ],
diff --git a/npm/win32-x64/package.json b/npm/win32-x64/package.json
index 21561855..5ecbe218 100644
--- a/npm/win32-x64/package.json
+++ b/npm/win32-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-embedded-win32-x64",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "description": "The win32-x64 binary for sass-embedded",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -11,9 +11,6 @@
   "engines": {
     "node": ">=14.0.0"
   },
-  "bin": {
-    "sass": "./dart-sass/sass.bat"
-  },
   "os": [
     "win32"
   ],
diff --git a/package.json b/package.json
index 8295fa64..07dae3eb 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "sass-embedded",
-  "version": "1.77.3",
+  "version": "1.77.8",
   "protocol-version": "3.0.0-dev",
-  "compiler-version": "1.77.3",
+  "compiler-version": "1.77.8",
   "description": "Node.js library that communicates with Embedded Dart Sass using the Embedded Sass protocol",
   "repository": "sass/embedded-host-node",
   "author": "Google Inc.",
@@ -23,6 +23,7 @@
   "engines": {
     "node": ">=16.0.0"
   },
+  "bin": {"sass": "dist/bin/sass.js"},
   "scripts": {
     "init": "ts-node ./tool/init.ts",
     "check": "npm-run-all check:gts check:tsc",
@@ -35,23 +36,26 @@
     "test": "jest"
   },
   "optionalDependencies": {
-    "sass-embedded-android-arm": "1.77.3",
-    "sass-embedded-android-arm64": "1.77.3",
-    "sass-embedded-android-ia32": "1.77.3",
-    "sass-embedded-android-x64": "1.77.3",
-    "sass-embedded-darwin-arm64": "1.77.3",
-    "sass-embedded-darwin-x64": "1.77.3",
-    "sass-embedded-linux-arm": "1.77.3",
-    "sass-embedded-linux-arm64": "1.77.3",
-    "sass-embedded-linux-ia32": "1.77.3",
-    "sass-embedded-linux-x64": "1.77.3",
-    "sass-embedded-linux-musl-arm": "1.77.3",
-    "sass-embedded-linux-musl-arm64": "1.77.3",
-    "sass-embedded-linux-musl-ia32": "1.77.3",
-    "sass-embedded-linux-musl-x64": "1.77.3",
-    "sass-embedded-win32-arm64": "1.77.3",
-    "sass-embedded-win32-ia32": "1.77.3",
-    "sass-embedded-win32-x64": "1.77.3"
+    "sass-embedded-android-arm": "1.77.8",
+    "sass-embedded-android-arm64": "1.77.8",
+    "sass-embedded-android-ia32": "1.77.8",
+    "sass-embedded-android-riscv64": "1.77.8",
+    "sass-embedded-android-x64": "1.77.8",
+    "sass-embedded-darwin-arm64": "1.77.8",
+    "sass-embedded-darwin-x64": "1.77.8",
+    "sass-embedded-linux-arm": "1.77.8",
+    "sass-embedded-linux-arm64": "1.77.8",
+    "sass-embedded-linux-ia32": "1.77.8",
+    "sass-embedded-linux-riscv64": "1.77.8",
+    "sass-embedded-linux-x64": "1.77.8",
+    "sass-embedded-linux-musl-arm": "1.77.8",
+    "sass-embedded-linux-musl-arm64": "1.77.8",
+    "sass-embedded-linux-musl-ia32": "1.77.8",
+    "sass-embedded-linux-musl-riscv64": "1.77.8",
+    "sass-embedded-linux-musl-x64": "1.77.8",
+    "sass-embedded-win32-arm64": "1.77.8",
+    "sass-embedded-win32-ia32": "1.77.8",
+    "sass-embedded-win32-x64": "1.77.8"
   },
   "dependencies": {
     "@bufbuild/protobuf": "^1.0.0",
@@ -68,7 +72,7 @@
     "@types/buffer-builder": "^0.2.0",
     "@types/google-protobuf": "^3.7.2",
     "@types/jest": "^29.4.0",
-    "@types/node": "^20.1.0",
+    "@types/node": "^22.0.0",
     "@types/shelljs": "^0.8.8",
     "@types/supports-color": "^8.1.1",
     "@types/tar": "^6.1.0",
diff --git a/test/utils.ts b/test/utils.ts
index f8733917..c071d481 100644
--- a/test/utils.ts
+++ b/test/utils.ts
@@ -48,7 +48,7 @@ export function expectEqualIgnoringWhitespace(
   string1: string,
   string2: string
 ): void {
-  function strip(str: string) {
+  function strip(str: string): string {
     return str.replace(/\s+/g, '');
   }
   expect(strip(string1)).toBe(strip(string2));
diff --git a/tool/get-deprecations.ts b/tool/get-deprecations.ts
index 73618b4d..9571335f 100644
--- a/tool/get-deprecations.ts
+++ b/tool/get-deprecations.ts
@@ -34,7 +34,7 @@ function toVersionCode(version: string | undefined): string {
  * Generates the list of deprecations based on the YAML file in the language
  * repo.
  */
-export async function getDeprecations(outDirectory: string) {
+export async function getDeprecations(outDirectory: string): Promise<void> {
   const yamlText = fs.readFileSync(yamlFile, 'utf8');
 
   const deprecations = parse(yamlText) as YamlData;
diff --git a/tool/prepare-optional-release.ts b/tool/prepare-optional-release.ts
index c0e606c3..29f488e8 100644
--- a/tool/prepare-optional-release.ts
+++ b/tool/prepare-optional-release.ts
@@ -13,7 +13,7 @@ export type DartPlatform =
   | 'linux-musl'
   | 'macos'
   | 'windows';
-export type DartArch = 'ia32' | 'x64' | 'arm' | 'arm64';
+export type DartArch = 'ia32' | 'x64' | 'arm' | 'arm64' | 'riscv64';
 
 const argv = yargs(process.argv.slice(2))
   .option('package', {
@@ -61,6 +61,8 @@ export function nodeArchToDartArch(arch: string): DartArch {
       return 'arm';
     case 'arm64':
       return 'arm64';
+    case 'riscv64':
+      return 'riscv64';
     default:
       throw Error(`Architecture ${arch} is not supported.`);
   }
@@ -112,47 +114,6 @@ async function downloadRelease(options: {
   await fs.unlink(zippedAssetPath);
 }
 
-// Patch the launcher script if needed.
-//
-// For linux both `-linux-` and `-linux-musl-` packages will be installed
-// because npm doesn't know how to select packages based on LibC. To avoid
-// conflicts, only the `-linux-` packages have "bin" scripts defined in
-// package.json, which we patch to detect which LibC is available and launch the
-// correct binary.
-async function patchLauncherScript(
-  path: string,
-  dartPlatform: DartPlatform,
-  dartArch: DartArch
-) {
-  if (dartPlatform !== 'linux') return;
-
-  const scriptPath = p.join(path, 'dart-sass', 'sass');
-  console.log(`Patching ${scriptPath} script.`);
-
-  const shebang = Buffer.from('#!/bin/sh\n');
-  const buffer = await fs.readFile(scriptPath);
-  if (!buffer.subarray(0, shebang.length).equals(shebang)) {
-    throw new Error(`${scriptPath} is not a shell script!`);
-  }
-
-  const lines = buffer.toString('utf-8').split('\n');
-  const index = lines.findIndex(line => line.startsWith('path='));
-  if (index < 0) {
-    throw new Error(`The format of ${scriptPath} has changed!`);
-  }
-
-  lines.splice(
-    index + 1,
-    0,
-    '# Detect linux-musl',
-    'if grep -qm 1 /ld-musl- /proc/self/exe; then',
-    `  path="$path/../../sass-embedded-linux-musl-${dartArch}/dart-sass"`,
-    'fi'
-  );
-
-  await fs.writeFile(scriptPath, lines.join('\n'));
-}
-
 void (async () => {
   try {
     const version = pkg['compiler-version'] as string;
@@ -178,7 +139,6 @@ void (async () => {
         `${getArchiveExtension(dartPlatform)}`,
       outPath,
     });
-    await patchLauncherScript(outPath, dartPlatform, dartArch);
   } catch (error) {
     console.error(error);
     process.exitCode = 1;
diff --git a/tool/prepare-release.ts b/tool/prepare-release.ts
index d5d3ba0d..4065ffcf 100644
--- a/tool/prepare-release.ts
+++ b/tool/prepare-release.ts
@@ -6,6 +6,7 @@ import {promises as fs} from 'fs';
 import * as shell from 'shelljs';
 
 import * as pkg from '../package.json';
+import {getDeprecations} from './get-deprecations';
 import {getLanguageRepo} from './get-language-repo';
 
 void (async () => {
@@ -14,6 +15,8 @@ void (async () => {
 
     await getLanguageRepo('lib/src/vendor');
 
+    await getDeprecations('lib/src/vendor');
+
     console.log('Transpiling TS into dist.');
     shell.exec('tsc -p tsconfig.build.json');
     shell.cp('lib/index.mjs', 'dist/lib/index.mjs');
@@ -32,7 +35,7 @@ void (async () => {
 
 // Quick sanity checks to make sure the release we are preparing is a suitable
 // candidate for release.
-async function sanityCheckBeforeRelease() {
+async function sanityCheckBeforeRelease(): Promise<void> {
   console.log('Running sanity checks before releasing.');
   const releaseVersion = pkg.version;
 
diff --git a/tool/utils.ts b/tool/utils.ts
index 1a9e9ae1..c68d3012 100644
--- a/tool/utils.ts
+++ b/tool/utils.ts
@@ -2,7 +2,7 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import {promises as fs, existsSync, lstatSync} from 'fs';
+import {existsSync, promises as fs, lstatSync} from 'fs';
 import * as p from 'path';
 import * as shell from 'shelljs';
 
diff --git a/tsconfig.build.json b/tsconfig.build.json
index 0673a92b..5ca9532f 100644
--- a/tsconfig.build.json
+++ b/tsconfig.build.json
@@ -1,6 +1,7 @@
 {
   "extends": "./tsconfig.json",
   "exclude": [
+    "jest.config.js",
     "lib/src/vendor/dart-sass/**",
     "**/*.test.ts"
   ]
diff --git a/tsconfig.json b/tsconfig.json
index 35577090..d83f95cd 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -11,6 +11,7 @@
   },
   "include": [
     "*.ts",
+    "bin/*.ts",
     "lib/**/*.ts",
     "tool/**/*.ts",
     "test/**/*.ts"