Typing for "easy-rbac" (#43149)

Co-authored-by: Adam Zerella <adamzerella@users.noreply.github.com>

types/easy-rbac/easy-rbac-tests.ts

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+import RBAC = require('easy-rbac');
+import rbac = require('easy-rbac');
+
+const roles = {
+    manager: {
+        can: ['post:save', 'post:delete', 'account:*'],
+        inherits: ['user']
+    },
+    user: {
+        can: [
+            'post:add',
+            {
+                name: 'post:save',
+                when: async () => true,
+            },
+            'user:create'
+        ],
+        inherits: ['manager']
+    }
+};
+
+const RBACInstance = new RBAC(roles);
+RBACInstance.can(['user', 'manager'], 'post:save', { userId: 1, ownerId: 2 });
+
+const RBACFunction = rbac.create(roles);
+RBACFunction.can('user', 'post:save', { userId: 1, ownerId: 2 });
+RBACFunction.can(['user', 'manager'], 'post:save', { userId: 1 });

types/easy-rbac/index.d.ts

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+// Type definitions for easy-rbac 3.1
+// Project: https://github.com/DeadAlready/easy-rbac
+// Definitions by:  Adam Zerella <https://github.com/adamzerella>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+interface RoleObject {
+    name: string;
+    when: (params: object) => Promise<boolean>;
+}
+
+interface Roles {
+    [key: string]: {
+        can: Array<string|RoleObject>;
+        inherits?: string[];
+    };
+}
+
+type Options = Roles | (() => Promise<Roles>) | Promise<Roles>;
+
+declare class RBAC {
+    constructor(opts: Options);
+    can(role: string|string[]|Roles[], operation: string, params?: object): Promise<boolean>;
+    static create(opts: Options): RBAC;
+}
+
+export = RBAC;

types/easy-rbac/tsconfig.json

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+{
+    "compilerOptions": {
+      "module": "commonjs",
+      "lib": [
+        "es6"
+      ],
+      "noImplicitAny": true,
+      "noImplicitThis": true,
+      "strictNullChecks": true,
+      "strictFunctionTypes": true,
+      "baseUrl": "../",
+      "typeRoots": [
+        "../"
+      ],
+      "types": [
+
+      ],
+      "noEmit": true,
+      "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+      "index.d.ts",
+      "easy-rbac-tests.ts"
+    ]
+}

types/easy-rbac/tslint.json

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+{
+    "extends": "dtslint/dt.json"
+}