Drop node 10 require fallback when load config

lib/svgo-node.js

@@ -14,24 +14,10 @@ const importConfig = async (configFile) => {
   if (configFile.endsWith('.cjs')) {
     config = require(configFile);
   } else {
-    try {
     // dynamic import expects file url instead of path and may fail
     // when windows path is provided
     const { default: imported } = await import(pathToFileURL(configFile));
     config = imported;
-    } catch (importError) {
-      // TODO remove require in v3
-      try {
-        config = require(configFile);
-      } catch (requireError) {
-        // throw original error if es module is detected
-        if (requireError.code === 'ERR_REQUIRE_ESM') {
-          throw importError;
-        } else {
-          throw requireError;
-        }
-      }
-    }
   }
   if (config == null || typeof config !== 'object' || Array.isArray(config)) {
     throw Error(`Invalid config file "${configFile}"`);

lib/svgo-node.test.js

@@ -147,12 +147,9 @@ describe('loadConfig', () => {
     expect(
       await loadConfig(null, path.join(cwd, './test/fixtures/missing'))
     ).toEqual(null);
-    // TODO remove check in v3
-    if (process.version.startsWith('v10.') === false) {
     expect(await loadConfig(null, path.join(fixtures, 'mjs'))).toEqual({
       plugins: ['mjs'],
     });
-    }
     expect(await loadConfig(null, path.join(fixtures, 'cjs'))).toEqual({
       plugins: ['cjs'],
     });
@@ -195,15 +192,12 @@ describe('loadConfig', () => {
     } catch (error) {
       expect(error.message).toMatch(/plugins is not defined/);
     }
-    // TODO remove check in v3
-    if (process.version.startsWith('v10.') === false) {
     try {
       await loadConfig(path.join(fixtures, 'invalid-runtime.mjs'));
       expect.fail('Config is loaded successfully');
     } catch (error) {
       expect(error.message).toMatch(/plugins is not defined/);
     }
-    }
   });
 
   test('handles MODULE_NOT_FOUND properly', async () => {