diff --git a/package.json b/package.json
index 6e80b9b..9b4c6f8 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
 		"postbuild": "npx esbuild src/index.ts --outfile=lib/cjs/index.js --bundle --platform=node --minify && tsc --emitDeclarationOnly --outDir lib/@types/",
 		"watch": "tsc --watch --sourceMap --outDir lib/esm/",
 		"squashify": "node . --in tests/images/ --out tests/output --verbose",
+		"squashifyDefaults": "node . -d",
 		"test": "vitest --coverage"
 	},
 	"files": [
diff --git a/src/args.ts b/src/args.ts
index 9741c44..0bc5277 100644
--- a/src/args.ts
+++ b/src/args.ts
@@ -1,15 +1,13 @@
 import { defaultConfigFile, extModes } from "./constants.js";
-import yargs from "yargs";
+import yargs, { Argv } from "yargs";
 import { CliOptions, ExtMode, ResizeType, resizeType } from "./types.js";
 import { hideBin } from "yargs/helpers";
-import { generateDefaultConfigFile } from "./utils";
+import { generateDefaultConfigFile } from "./utils.js";
 
 /**
  * Get the command-line settings
  */
-export function getCliOptions(
-  rawArgs: yargs.Argv<object> | undefined,
-): CliOptions {
+export function getCliOptions(rawArgs: Argv<object> | undefined): CliOptions {
   if (!rawArgs) {
     rawArgs = yargs(hideBin(process.argv));
   }
diff --git a/src/encodeImage.ts b/src/encodeImage.ts
index bab9815..96b2b49 100644
--- a/src/encodeImage.ts
+++ b/src/encodeImage.ts
@@ -1,4 +1,4 @@
-import { CompressionMeta, OutputData } from "./types";
+import { CompressionMeta, OutputData } from "./types.js";
 import sharp, { FitEnum } from "sharp";
 import { transparentColor } from "./constants.js";
 
diff --git a/src/prompts.ts b/src/prompts.ts
index 42f971b..7dab6e7 100644
--- a/src/prompts.ts
+++ b/src/prompts.ts
@@ -5,7 +5,7 @@ import {
   getImageCompressionOptions,
   srcDirQuestion,
 } from "./options.js";
-import { CompressionOptionsMap, type ScriptOptions } from "./types";
+import { CompressionOptionsMap, type ScriptOptions } from "./types.js";
 import {
   defaultCompressionOptions,
   getImageFormatsInFolder,
diff --git a/tsconfig.json b/tsconfig.json
index e0b6ab5..4011361 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
 	"compilerOptions": {
-		"module": "ESNext",
-		"moduleResolution": "node",
+		"module": "NodeNext",
+		"moduleResolution": "NodeNext",
 		"target": "ESNext",
 		"esModuleInterop": true,
 		"strict": true,