fix: node-fetch typings

package.json

@@ -40,6 +40,7 @@
 	"dependencies": {
 		"fast-xml-parser": "^3.20.3",
 		"node-fetch": "^2.6.5",
+		"tslib": "^2.3.1",
 		"yargs": "^17.2.1"
 	},
 	"devDependencies": {
@@ -49,7 +50,7 @@
 		"@babel/preset-typescript": "^7.15.0",
 		"@types/jest": "^27.0.2",
 		"@types/node": "^16.11.1",
-		"@types/node-fetch": "^3.0.3",
+		"@types/node-fetch": "^2.5.12",
 		"@types/yargs": "^17.0.4",
 		"@typescript-eslint/eslint-plugin": "^5.0.0",
 		"@typescript-eslint/parser": "^5.0.0",

test/main.test.ts

@@ -4,7 +4,8 @@ import { search } from '../src/index';
 test('should throw on invalid site', async () => {
 	try {
 		await search('asd123');
-	} catch (error) {
+	} catch (e) {
+		const error = e as Error;
 		expect(error).toBeInstanceOf(Error);
 		expect(error.message).toBe('This site is not supported.');
 	}
@@ -14,7 +15,8 @@ test('should throw on non-string', async () => {
 	try {
 		// @ts-ignore
 		await search(123);
-	} catch (error) {
+	} catch (e) {
+		const error = e as Error;
 		expect(error).toBeInstanceOf(Error);
 		expect(error.message).toBe('This site is not supported.');
 	}
@@ -24,7 +26,8 @@ test('should throw on tags not being an array', async () => {
 	try {
 		// @ts-ignore
 		await search('danbooru', { tags: 'test' });
-	} catch (error) {
+	} catch (e) {
+		const error = e as Error;
 		expect(error).toBeInstanceOf(Error);
 		expect(error.message).toBe('Tags have to be an array.');
 	}
@@ -34,7 +37,8 @@ test('should throw on limit not being a number', async () => {
 	try {
 		// @ts-ignore
 		await search('danbooru', { limit: {} });
-	} catch (error) {
+	} catch (e) {
+		const error = e as Error;
 		expect(error).toBeInstanceOf(Error);
 		expect(error.message).toBe('Limit has to be a number.');
 	}