Json5FileValidator => Add a function to test JSON5 file or str compared to a zod schema

helpers/Json5FileValidator.ts

+import JSON5            from 'json5';
+import fs               from 'fs';
+import { z, ZodError }  from 'zod';
+import { fromZodError } from 'zod-validation-error';
+
+
+class Json5FileValidator {
+    validateFile<T>(schema: z.ZodType<T>, filePathOrStr: string, isFile: boolean = true, resultSanitizer: (value: T) => T = value => value): { content: T | undefined, isValid: boolean, error: string | null } {
+        let parsedInput: T;
+
+        try {
+            parsedInput = JSON5.parse(isFile ? fs.readFileSync(filePathOrStr, 'utf8') : filePathOrStr);
+        } catch ( error ) {
+            return {
+                content: undefined,
+                isValid: false,
+                error  : `JSON5 invalid : ${ JSON.stringify(error) }`
+            };
+        }
+
+        try {
+            return {
+                content: resultSanitizer(schema.parse(parsedInput) as unknown as T),
+                isValid: true,
+                error  : null
+            };
+        } catch ( error ) {
+            if ( error instanceof ZodError ) {
+                return {
+                    content: parsedInput,
+                    isValid: false,
+                    error  : fromZodError(error).toString()
+                };
+            }
+
+            return {
+                content: parsedInput,
+                isValid: false,
+                error  : `Unknown error : ${ JSON.stringify(error) }`
+            };
+        }
+    }
+}
+
+
+export default new Json5FileValidator();
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