feat: remove lodash dependency

package.json

@@ -51,7 +51,6 @@
     "@types/fs-extra": "8.1.0",
     "@types/glob": "7.1.2",
     "@types/jest": "^29.5.8",
-    "@types/lodash": "^4.14.201",
     "coveralls": "3.1.0",
     "get-root-path": "2.0.2",
     "husky": "4.2.5",
@@ -72,7 +71,6 @@
     "commander": "^11.1.0",
     "fs-extra": "8.1.0",
     "glob": "7.1.6",
-    "lodash": "^4.17.21",
     "reflect-metadata": "0.1.13"
   }
 }

src/classy.ts

@@ -3,7 +3,6 @@ import chalk = require('chalk');
 import * as cli from 'commander';
 import * as fs from 'fs-extra';
 import * as glob from 'glob';
-import * as _ from 'lodash';
 import * as path from 'path';
 import { setIocContainer } from './commander';
 import { getUniqueModuleNames } from './modules';

src/commander.ts

@@ -1,5 +1,4 @@
 import * as cli from 'commander';
-import * as _ from 'lodash';
 import { coerceValue } from './coercion';
 import { errorToString } from './errors';
 import { getCommandOptions, getCommandValues } from './metadata';
@@ -132,16 +131,14 @@ function valueDefinitionToUsageString(value: CommandValueDefinition) {
 
 export function getCommandDefinitionUsage(commandDefinition: CommandDefinition<any>) {
   const values = getCommandValues(commandDefinition.paramsClass.prototype);
-  const valuesUsage = _
-    .chain(values)
+  const valuesUsage = values
     .map((value, index) => ({
       value,
       index
     }))
     .sort((a, b) => a.value.variadic ? 1 : b.value.variadic ? -1 : a.index - b.index)
     .map((valueAndIndex) => valueDefinitionToUsageString(valueAndIndex.value))
-    .join(' ')
-    .value();
+    .join(' ');
   const usage = `${commandDefinition.name} ${valuesUsage}`.trim();
   return usage;
 }

src/modules.ts

@@ -1,5 +1,3 @@
-import * as _ from 'lodash';
-
 function isFileNameTypeScriptOrJavaScript(fileName: string) {
   return /.\.(ts|js)$/i.test(fileName);
 }
@@ -13,13 +11,13 @@ function removeFileExtension(fileName: string) {
 }
 
 export function getUniqueModuleNames(fileNames: string[]) {
-  const moduleNames = _
-    .chain(fileNames)
-    .filter((fileName) => !isFileNameDeclarationFile(fileName))
-    .filter(isFileNameTypeScriptOrJavaScript)
-    .map(removeFileExtension)
-    .uniq()
-    .value();
-
+  const moduleNames = [
+    ...new Set(
+      fileNames
+        .filter((filename) => !isFileNameDeclarationFile(filename))
+        .filter(isFileNameTypeScriptOrJavaScript)
+        .map(removeFileExtension)
+    ),
+  ];
   return moduleNames;
 }

tsconfig.json

@@ -10,7 +10,8 @@
     "moduleResolution": "node",
     "outDir": "./dist",
     "skipLibCheck": true,
-    "strict": true
+    "strict": true,
+    "target": "ES2015"
   },
   "exclude": [
     "./node_modules"