Merge branch 'LeoAnesi-feat/validation-add-support-for-class-validator'

nestjs · Nov 17, 2020 · 431b3c4 · 431b3c4
2 parents 2f780d4 + 2b8bf8d
commit 431b3c4
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Showing 6 changed files with 3,167 additions and 2,985 deletions.
diff --git a/lib/config.module.ts b/lib/config.module.ts
@@ -46,7 +46,11 @@ export class ConfigModule {
         ...process.env,
       };
     }
-    if (options.validationSchema) {
+    if (options.validate) {
+      const validatedConfig = options.validate(config);
+      validatedEnvConfig = validatedConfig;
+      this.assignVariablesToProcess(validatedConfig);
+    } else if (options.validationSchema) {
       const validationOptions = this.getSchemaValidationOptions(options);
       const {
         error,

diff --git a/lib/interfaces/config-module-options.interface.ts b/lib/interfaces/config-module-options.interface.ts
@@ -27,14 +27,23 @@ export interface ConfigModuleOptions {
    */
   encoding?: string;
 
+  /**
+   * Custom function to validate environment variables. It takes an object containing environment
+   * variables as input and outputs validated environment variables.
+   * If exception is thrown in the function it would prevent the application from bootstrapping.
+   * Also, environment variables can be edited through this function, changes
+   * will be reflected in the process.env object.
+   */
+  validate?: (config: Record<string, any>) => Record<string, any>;
+
   /**
    * Environment variables validation schema (Joi).
    */
   validationSchema?: any;
 
   /**
    * Schema validation options.
-   * See: https://hapi.dev/family/joi/?v=16.1.8#anyvalidatevalue-options
+   * See: https://joi.dev/api/?v=17.3.0#anyvalidatevalue-options
    */
   validationOptions?: Record<string, any>;