feat(config-files): add simple parsers and validators

Author: Char2sGu

packages/config-files/src/parsers.ts

@@ -0,0 +1,21 @@
+import { Injectable } from '@angular/core';
+
+import { ConfigFileParser, ConfigFileParsingException } from './parser';
+
+@Injectable({ providedIn: 'root' })
+export class TextParser implements ConfigFileParser {
+  parse(value: string): object {
+    return { value };
+  }
+}
+
+@Injectable({ providedIn: 'root' })
+export class JsonParser implements ConfigFileParser {
+  parse(raw: string): object {
+    try {
+      return JSON.parse(raw);
+    } catch (error) {
+      throw new ConfigFileParsingException(String(error));
+    }
+  }
+}

packages/config-files/src/validators.ts

@@ -0,0 +1,8 @@
+import { Injectable } from '@angular/core';
+
+import { ConfigFileValidator } from './validator';
+
+@Injectable({ providedIn: 'root' })
+export class NoopValidator implements ConfigFileValidator<object> {
+  validate(): void {}
+}