diff --git a/README.md b/README.md
index f02ea0b..e69275f 100644
--- a/README.md
+++ b/README.md
@@ -46,9 +46,9 @@ redirect all others to the specified url
 const {create_auth_handler} = require('@sapphirecode/auth-server-helper');
 
 const handler = create_auth_handler(
-  (req) => {
+  async (req) => {
     if (req.user === 'foo' && req.password === 'bar')
-      const {access_token_id, refresh_token_id} = req.allow_access({
+      const {access_token_id, refresh_token_id} = await req.allow_access({
         access_token_expires_in: 600, // seconds until access tokens expire
         include_refresh_token: true, // should the answer include a refresh token? default: false
         refresh_token_expires_in: 3600, // seconds until refresh tokens expire (required if refresh tokens are generated)
@@ -56,7 +56,7 @@ const handler = create_auth_handler(
       });
 
     if (req.user === 'part' && req.password === 'baz')
-      const part_id = req.allow_part(
+      const part_id = await req.allow_part(
         60, // seconds until part_token expires
         'some_module', // next module handler (defined below)
         {foo: 'bar'} // custom data to attach to the token
diff --git a/lib/AuthHandler.ts b/lib/AuthHandler.ts
index b863a1c..3f34e30 100644
--- a/lib/AuthHandler.ts
+++ b/lib/AuthHandler.ts
@@ -21,7 +21,6 @@ interface AccessResult {
   refresh_token_id?: string;
 }
 
-
 interface AccessResponse {
   token_type: string;
   access_token: string;
@@ -69,15 +68,20 @@ class AuthRequest {
     this.response.setHeader ('Content-Type', 'application/json');
   }
 
-  public allow_access ({
+  public async allow_access ({
     access_token_expires_in,
     include_refresh_token,
     refresh_token_expires_in,
     data
-  }: AccessSettings): AccessResult {
+  }: AccessSettings): Promise<AccessResult> {
     this.default_header ();
 
-    const at = auth.sign ('access_token', access_token_expires_in, { data });
+    const at = await auth.sign (
+      'access_token',
+      access_token_expires_in,
+
+      { data }
+    );
     const result: AccessResult = { access_token_id: at.id };
 
     const res: AccessResponse = {
@@ -96,7 +100,7 @@ class AuthRequest {
     if (include_refresh_token) {
       if (typeof refresh_token_expires_in !== 'number')
         throw new Error ('no expiry time defined for refresh tokens');
-      const rt = auth.sign (
+      const rt = await auth.sign (
         'refresh_token',
         refresh_token_expires_in,
         { data }
@@ -111,14 +115,14 @@ class AuthRequest {
     return result;
   }
 
-  public allow_part (
+  public async allow_part (
     part_token_expires_in: number,
     next_module: string,
     data?: Record<string, unknown>
-  ): string {
+  ): Promise<string> {
     this.default_header ();
 
-    const pt = auth.sign (
+    const pt = await auth.sign (
       'part_token',
       part_token_expires_in,
       { next_module, data }
diff --git a/lib/Authority.ts b/lib/Authority.ts
index ecfeb84..363c069 100644
--- a/lib/Authority.ts
+++ b/lib/Authority.ts
@@ -79,13 +79,13 @@ class Authority {
     return result;
   }
 
-  public sign (
+  public async sign (
     type: TokenType,
     valid_for: number,
     options?: SignatureOptions
-  ): SignatureResult {
+  ): Promise<SignatureResult> {
     const time = Date.now ();
-    const key = keystore.get_key (time / 1000, valid_for);
+    const key = await keystore.get_sign_key (time / 1000, valid_for);
     const attributes = {
       id:          create_salt (),
       iat:         time,
diff --git a/lib/KeyStore.ts b/lib/KeyStore.ts
index 33c43ef..bb5824e 100644
--- a/lib/KeyStore.ts
+++ b/lib/KeyStore.ts
@@ -5,14 +5,24 @@
  * Created by Timo Hocker <timo@scode.ovh>, December 2020
  */
 
-import { create_salt } from '@sapphirecode/crypto-helper';
+import { generate_keypair } from '@sapphirecode/crypto-helper';
+
+interface Keypair {
+  private_key: string;
+  public_key: string;
+}
 
 interface Key {
-  key: string;
+  key: Keypair;
   valid_until: number;
   timeout: NodeJS.Timeout;
 }
 
+function get_index (iat: number): string {
+  return Math.floor (iat / 60)
+    .toFixed (0);
+}
+
 class KeyStore {
   private _keys: Record<string, Key> = {};
 
@@ -22,38 +32,46 @@ class KeyStore {
     }, (valid_for + 5) * 1000);
   }
 
-  public get_key (iat: number, valid_for = 0): string {
-    const index = Math.floor (iat / 60)
-      .toFixed (0);
+  public async get_sign_key (iat: number, valid_for: number): Promise<string> {
+    const index = get_index (iat);
+
+    if (valid_for <= 0)
+      throw new Error ('cannot create infinitely valid key');
+
+    if ((iat + 1) * 1000 < (new Date)
+      .getTime ())
+      throw new Error ('cannot access already expired keys');
 
     const valid_until = (new Date)
       .getTime () + (valid_for * 1000);
 
     if (typeof this._keys[index] !== 'undefined') {
       const key = this._keys[index];
-      if (valid_for !== 0 && key.valid_until < valid_until) {
+      if (key.valid_until < valid_until) {
         clearTimeout (key.timeout);
         key.timeout = this.set_timeout (index, valid_for);
         key.valid_until = valid_until;
       }
-      return key.key;
+      return key.key.private_key;
     }
 
-    if (valid_for !== 0) {
-      if ((iat + 1) * 1000 < (new Date)
-        .getTime ())
-        throw new Error ('cannot create already expired keys');
+    this._keys[index] = {
+      key:     await generate_keypair (),
+      timeout: this.set_timeout (index, valid_for),
+      valid_until
+    };
 
-      this._keys[index] = {
-        key:     create_salt (),
-        timeout: this.set_timeout (index, valid_for),
-        valid_until
-      };
+    return this._keys[index].key.private_key;
+  }
 
-      return this._keys[index].key;
-    }
+  public get_key (iat: number): string {
+    const index = get_index (iat);
 
-    throw new Error ('key could not be found');
+    if (typeof this._keys[index] === 'undefined')
+      throw new Error ('key could not be found');
+
+    const key = this._keys[index];
+    return key.key.public_key;
   }
 }
 
diff --git a/package.json b/package.json
index 6b5af69..da343a4 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "middleware"
   ],
   "dependencies": {
-    "@sapphirecode/crypto-helper": "^1.2.2",
+    "@sapphirecode/crypto-helper": "^1.3.0",
     "@sapphirecode/encoding-helper": "^1.1.0",
     "@sapphirecode/utilities": "^1.8.8"
   },
diff --git a/test/spec/Authority.ts b/test/spec/Authority.ts
index 53dd482..987d50f 100644
--- a/test/spec/Authority.ts
+++ b/test/spec/Authority.ts
@@ -25,8 +25,8 @@ describe ('authority', () => {
       .uninstall ();
   });
 
-  it ('should create an access token', () => {
-    const token = auth.sign ('access_token', 60);
+  it ('should create an access token', async () => {
+    const token = await auth.sign ('access_token', 60);
     jasmine.clock ()
       .tick (30000);
     const res = auth.verify (token.signature);
@@ -44,8 +44,8 @@ describe ('authority', () => {
       .toBeUndefined ();
   });
 
-  it ('should create a refresh token', () => {
-    const token = auth.sign ('refresh_token', 600);
+  it ('should create a refresh token', async () => {
+    const token = await auth.sign ('refresh_token', 600);
     jasmine.clock ()
       .tick (30000);
     const res = auth.verify (token.signature);
@@ -63,8 +63,8 @@ describe ('authority', () => {
       .toBeUndefined ();
   });
 
-  it ('should create a part token', () => {
-    const token = auth.sign ('part_token', 60, { next_module: '2fa' });
+  it ('should create a part token', async () => {
+    const token = await auth.sign ('part_token', 60, { next_module: '2fa' });
     jasmine.clock ()
       .tick (30000);
     const res = auth.verify (token.signature);
@@ -82,8 +82,8 @@ describe ('authority', () => {
       .toBeUndefined ();
   });
 
-  it ('should reject an invalid access token', () => {
-    const token = auth.sign ('access_token', 60);
+  it ('should reject an invalid access token', async () => {
+    const token = await auth.sign ('access_token', 60);
     token.signature = modify_signature (token.signature);
     jasmine.clock ()
       .tick (30000);
@@ -102,8 +102,8 @@ describe ('authority', () => {
       .toEqual ('invalid signature');
   });
 
-  it ('should reject blacklisted access token', () => {
-    const token = auth.sign ('access_token', 60);
+  it ('should reject blacklisted access token', async () => {
+    const token = await auth.sign ('access_token', 60);
     jasmine.clock ()
       .tick (30000);
     bl.add_signature (token.id);
@@ -122,8 +122,8 @@ describe ('authority', () => {
       .toEqual ('blacklisted');
   });
 
-  it ('should reject an invalid refresh token', () => {
-    const token = auth.sign ('refresh_token', 600);
+  it ('should reject an invalid refresh token', async () => {
+    const token = await auth.sign ('refresh_token', 600);
     token.signature = modify_signature (token.signature);
     jasmine.clock ()
       .tick (30000);
@@ -142,8 +142,8 @@ describe ('authority', () => {
       .toEqual ('invalid signature');
   });
 
-  it ('should reject a blacklisted refresh token', () => {
-    const token = auth.sign ('refresh_token', 600);
+  it ('should reject a blacklisted refresh token', async () => {
+    const token = await auth.sign ('refresh_token', 600);
     jasmine.clock ()
       .tick (30000);
     bl.add_signature (token.id);
diff --git a/test/spec/Gateway.ts b/test/spec/Gateway.ts
index 4fd6533..d099c03 100644
--- a/test/spec/Gateway.ts
+++ b/test/spec/Gateway.ts
@@ -57,7 +57,7 @@ describe ('gateway', () => {
   });
 
   it ('should allow a valid access token', async () => {
-    const token = authority.sign ('access_token', 60);
+    const token = await authority.sign ('access_token', 60);
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
     expect (resp.statusCode)
       .toEqual (200);
@@ -66,7 +66,7 @@ describe ('gateway', () => {
   });
 
   it ('should allow a valid access token using cookies', async () => {
-    const token = authority.sign ('access_token', 60);
+    const token = await authority.sign ('access_token', 60);
     const resp = await get ({ cookie: `cookie_jar=${token.signature}` });
     expect (resp.statusCode)
       .toEqual (200);
@@ -75,7 +75,7 @@ describe ('gateway', () => {
   });
 
   it ('should correctly deliver token data', async () => {
-    const token = authority.sign ('access_token', 60, { data: 'foobar' });
+    const token = await authority.sign ('access_token', 60, { data: 'foobar' });
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
     expect (resp.statusCode)
       .toEqual (200);
@@ -87,7 +87,7 @@ describe ('gateway', () => {
   });
 
   it ('should reject an outdated access token', async () => {
-    const token = authority.sign ('access_token', 60);
+    const token = await authority.sign ('access_token', 60);
     jasmine.clock ()
       .tick (70000);
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
@@ -98,7 +98,7 @@ describe ('gateway', () => {
   });
 
   it ('should reject a blacklisted access token', async () => {
-    const token = authority.sign ('access_token', 60);
+    const token = await authority.sign ('access_token', 60);
     blacklist.add_signature (token.id);
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
     expect (resp.statusCode)
@@ -108,7 +108,7 @@ describe ('gateway', () => {
   });
 
   it ('should reject any refresh_token', async () => {
-    const token = authority.sign ('refresh_token', 60);
+    const token = await authority.sign ('refresh_token', 60);
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
     expect (resp.statusCode)
       .toEqual (302);
@@ -117,7 +117,7 @@ describe ('gateway', () => {
   });
 
   it ('should reject any part_token', async () => {
-    const token = authority.sign ('part_token', 60);
+    const token = await authority.sign ('part_token', 60);
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
     expect (resp.statusCode)
       .toEqual (302);
@@ -126,7 +126,7 @@ describe ('gateway', () => {
   });
 
   it ('should reject any noname token', async () => {
-    const token = authority.sign ('none', 60);
+    const token = await authority.sign ('none', 60);
     const resp = await get ({ authorization: `Bearer ${token.signature}` });
     expect (resp.statusCode)
       .toEqual (302);
diff --git a/test/spec/KeyStore.ts b/test/spec/KeyStore.ts
index 6ea6efe..7b3c114 100644
--- a/test/spec/KeyStore.ts
+++ b/test/spec/KeyStore.ts
@@ -20,54 +20,66 @@ describe ('key store', () => {
       .mockDate (base_date);
   });
 
-  const keys: {key:string, iat:number}[] = [];
+  const keys: {key:string, sign:string, iat:number}[] = [];
 
-  it ('should generate a new key', () => {
+  it ('should generate a new key', async () => {
     const iat = (new Date)
       .getTime () / 1000;
     const duration = 10 * frame;
-    const key = ks.get_key (iat, duration);
+    const key = await ks.get_sign_key (iat, duration);
+    const sign = ks.get_key (iat);
     expect (typeof key)
       .toEqual ('string');
-    expect (key.length)
-      .toEqual (64);
-    keys.push ({ iat, key });
+    expect (typeof sign)
+      .toEqual ('string');
+    keys.push ({ iat, key, sign });
   });
 
-  it ('should return the generated key', () => {
-    const key = ks.get_key (keys[0].iat);
+  it ('should return the generated key', async () => {
+    const key = await ks.get_sign_key (keys[0].iat, 1);
     expect (key)
       .toEqual (keys[0].key);
+    const sign = ks.get_key (keys[0].iat);
+    expect (sign)
+      .toEqual (keys[0].sign);
   });
 
-  it ('should return the same key on a different time', () => {
-    const key = ks.get_key (keys[0].iat + (frame / 2));
+  it ('should return the same key on a different time', async () => {
+    const key = await ks.get_sign_key (keys[0].iat + (frame / 2), 1);
     expect (key)
       .toEqual (keys[0].key);
+    const sign = ks.get_key (keys[0].iat + (frame / 2));
+    expect (sign)
+      .toEqual (keys[0].sign);
   });
 
-  it ('should generate a new key after time frame is over', () => {
+  it ('should generate a new key after time frame is over', async () => {
     jasmine.clock ()
       .tick (frame * 1000);
     const iat = (new Date)
       .getTime () / 1000;
     const duration = 10 * frame;
-    const key = ks.get_key (iat, duration);
+    const key = await ks.get_sign_key (iat, duration);
+    const sign = ks.get_key (iat);
     expect (typeof key)
       .toEqual ('string');
-    expect (key.length)
-      .toEqual (64);
     expect (key).not.toEqual (keys[0].key);
-    keys.push ({ iat, key });
+    expect (sign).not.toEqual (keys[0].sign);
+    keys.push ({ iat, key, sign });
   });
 
-  it ('should return both keys', () => {
-    const key = ks.get_key (keys[0].iat);
-    expect (key)
-      .toEqual (keys[0].key);
-    const k2 = ks.get_key (keys[1].iat);
+  it ('should return both keys, but not the first sign key', async () => {
+    const sign = ks.get_key (keys[0].iat);
+    expect (sign)
+      .toEqual (keys[0].sign);
+    await expectAsync (ks.get_sign_key (keys[0].iat, 1))
+      .toBeRejectedWithError ('cannot access already expired keys');
+    const k2 = await ks.get_sign_key (keys[1].iat, 1);
+    const s2 = ks.get_key (keys[1].iat);
     expect (k2)
       .toEqual (keys[1].key);
+    expect (s2)
+      .toEqual (keys[1].sign);
   });
 
   it ('should throw on non existing key', () => {
@@ -82,21 +94,26 @@ describe ('key store', () => {
       .toThrowError ('key could not be found');
   });
 
-  it ('should still retrieve the second key', () => {
-    const key = ks.get_key (keys[1].iat);
-    expect (key)
-      .toEqual (keys[1].key);
-  });
+  it (
+    'should still retrieve the second key, but not its sign key',
+    async () => {
+      await expectAsync (ks.get_sign_key (keys[1].iat, 1))
+        .toBeRejectedWithError ('cannot access already expired keys');
+      const sign = ks.get_key (keys[1].iat);
+      expect (sign)
+        .toEqual (keys[1].sign);
+    }
+  );
 
-  it ('should reject key generation of expired keys', () => {
+  it ('should reject key generation of expired keys', async () => {
     const iat = ((new Date)
       .getTime () / 1000) - 2;
     const duration = 5;
-    expect (() => ks.get_key (iat, duration))
-      .toThrowError ('cannot create already expired keys');
+    await expectAsync (ks.get_sign_key (iat, duration))
+      .toBeRejectedWithError ('cannot access already expired keys');
   });
 
-  it ('key should live as long as the longest created token', () => {
+  it ('key should live as long as the longest created token', async () => {
     const base = new Date;
     base.setSeconds (2, 0);
     jasmine.clock ()
@@ -108,21 +125,22 @@ describe ('key store', () => {
     const duration1 = frame;
     const duration2 = frame * 10;
 
-    const key1 = ks.get_key (iat, duration1);
+    const key1 = await ks.get_sign_key (iat, duration1);
     const step = 0.9 * frame;
     jasmine.clock ()
       .tick (step * 1000);
-    const key2 = ks.get_key (iat + step, duration2);
+    const key2 = await ks.get_sign_key (iat + step, duration2);
+    const sign = ks.get_key (iat);
     expect (key1)
       .toEqual (key2);
     jasmine.clock ()
       .tick (5000 * frame);
-    const keyv = ks.get_key (iat + step);
-    expect (keyv)
-      .toEqual (key1);
+    const signv = ks.get_key (iat + step);
+    expect (signv)
+      .toEqual (sign);
   });
 
-  // required use case: insert keys for verification of old tokens
+  // TODO: required use case: insert keys for verification of old tokens
 
   afterAll (() => {
     jasmine.clock ()
diff --git a/yarn.lock b/yarn.lock
index ff52911..b3b5625 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -329,10 +329,10 @@
     "@nodelib/fs.scandir" "2.1.4"
     fastq "^1.6.0"
 
-"@sapphirecode/crypto-helper@^1.2.2":
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/@sapphirecode/crypto-helper/-/crypto-helper-1.2.2.tgz#518c763ed069f78850a05c92326672ec8f398ef5"
-  integrity sha512-OOHKrbD+YHriqkLk8snOJWTskmptmImTZH62Q09XeHbit09zSMUSk+B5c5eyPr80L1s7SSETqfNx7iyIAWKQzg==
+"@sapphirecode/crypto-helper@^1.3.0":
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/@sapphirecode/crypto-helper/-/crypto-helper-1.3.0.tgz#3d46878475064327af19779afabb6776e3b339c5"
+  integrity sha512-v3fSYKxYV/QZYGNcb977ZNzTgRrjmAVus8H01Jpc/vJN1mKbR6gwb4mL3oHQWJ0JjWlz2+lTKZ160fTr02le5g==
   dependencies:
     "@sapphirecode/encoding-helper" "^1.1.0"
 
@@ -469,60 +469,60 @@
   integrity sha512-vwX+/ija9xKc/z9VqMCdbf4WYcMTGsI0I/L/6shIF3qXURxZOhPQlPRHtjTpiNhAwn0paMJzlOQqw6mAGEQnTA==
 
 "@typescript-eslint/eslint-plugin@^4.1.0":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.11.1.tgz#7579c6d17ad862154c10bc14b40e5427b729e209"
-  integrity sha512-fABclAX2QIEDmTMk6Yd7Muv1CzFLwWM4505nETzRHpP3br6jfahD9UUJkhnJ/g2m7lwfz8IlswcwGGPGiq9exw==
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.12.0.tgz#00d1b23b40b58031e6d7c04a5bc6c1a30a2e834a"
+  integrity sha512-wHKj6q8s70sO5i39H2g1gtpCXCvjVszzj6FFygneNFyIAxRvNSVz9GML7XpqrB9t7hNutXw+MHnLN/Ih6uyB8Q==
   dependencies:
-    "@typescript-eslint/experimental-utils" "4.11.1"
-    "@typescript-eslint/scope-manager" "4.11.1"
+    "@typescript-eslint/experimental-utils" "4.12.0"
+    "@typescript-eslint/scope-manager" "4.12.0"
     debug "^4.1.1"
     functional-red-black-tree "^1.0.1"
     regexpp "^3.0.0"
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/experimental-utils@4.11.1":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.11.1.tgz#2dad3535b878c25c7424e40bfa79d899f3f485bc"
-  integrity sha512-mAlWowT4A6h0TC9F+J5pdbEhjNiEMO+kqPKQ4sc3fVieKL71dEqfkKgtcFVSX3cjSBwYwhImaQ/mXQF0oaI38g==
+"@typescript-eslint/experimental-utils@4.12.0":
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.12.0.tgz#372838e76db76c9a56959217b768a19f7129546b"
+  integrity sha512-MpXZXUAvHt99c9ScXijx7i061o5HEjXltO+sbYfZAAHxv3XankQkPaNi5myy0Yh0Tyea3Hdq1pi7Vsh0GJb0fA==
   dependencies:
     "@types/json-schema" "^7.0.3"
-    "@typescript-eslint/scope-manager" "4.11.1"
-    "@typescript-eslint/types" "4.11.1"
-    "@typescript-eslint/typescript-estree" "4.11.1"
+    "@typescript-eslint/scope-manager" "4.12.0"
+    "@typescript-eslint/types" "4.12.0"
+    "@typescript-eslint/typescript-estree" "4.12.0"
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
 "@typescript-eslint/parser@^4.1.0":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.11.1.tgz#981e18de2e019d6ca312596615f92e8f6f6598ed"
-  integrity sha512-BJ3jwPQu1jeynJ5BrjLuGfK/UJu6uwHxJ/di7sanqmUmxzmyIcd3vz58PMR7wpi8k3iWq2Q11KMYgZbUpRoIPw==
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.12.0.tgz#e1cf30436e4f916c31fcc962158917bd9e9d460a"
+  integrity sha512-9XxVADAo9vlfjfoxnjboBTxYOiNY93/QuvcPgsiKvHxW6tOZx1W4TvkIQ2jB3k5M0pbFP5FlXihLK49TjZXhuQ==
   dependencies:
-    "@typescript-eslint/scope-manager" "4.11.1"
-    "@typescript-eslint/types" "4.11.1"
-    "@typescript-eslint/typescript-estree" "4.11.1"
+    "@typescript-eslint/scope-manager" "4.12.0"
+    "@typescript-eslint/types" "4.12.0"
+    "@typescript-eslint/typescript-estree" "4.12.0"
     debug "^4.1.1"
 
-"@typescript-eslint/scope-manager@4.11.1":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.11.1.tgz#72dc2b60b0029ab0888479b12bf83034920b4b69"
-  integrity sha512-Al2P394dx+kXCl61fhrrZ1FTI7qsRDIUiVSuN6rTwss6lUn8uVO2+nnF4AvO0ug8vMsy3ShkbxLu/uWZdTtJMQ==
+"@typescript-eslint/scope-manager@4.12.0":
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.12.0.tgz#beeb8beca895a07b10c593185a5612f1085ef279"
+  integrity sha512-QVf9oCSVLte/8jvOsxmgBdOaoe2J0wtEmBr13Yz0rkBNkl5D8bfnf6G4Vhox9qqMIoG7QQoVwd2eG9DM/ge4Qg==
   dependencies:
-    "@typescript-eslint/types" "4.11.1"
-    "@typescript-eslint/visitor-keys" "4.11.1"
+    "@typescript-eslint/types" "4.12.0"
+    "@typescript-eslint/visitor-keys" "4.12.0"
 
-"@typescript-eslint/types@4.11.1":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.11.1.tgz#3ba30c965963ef9f8ced5a29938dd0c465bd3e05"
-  integrity sha512-5kvd38wZpqGY4yP/6W3qhYX6Hz0NwUbijVsX2rxczpY6OXaMxh0+5E5uLJKVFwaBM7PJe1wnMym85NfKYIh6CA==
+"@typescript-eslint/types@4.12.0":
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.12.0.tgz#fb891fe7ccc9ea8b2bbd2780e36da45d0dc055e5"
+  integrity sha512-N2RhGeheVLGtyy+CxRmxdsniB7sMSCfsnbh8K/+RUIXYYq3Ub5+sukRCjVE80QerrUBvuEvs4fDhz5AW/pcL6g==
 
-"@typescript-eslint/typescript-estree@4.11.1":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.11.1.tgz#a4416b4a65872a48773b9e47afabdf7519eb10bc"
-  integrity sha512-tC7MKZIMRTYxQhrVAFoJq/DlRwv1bnqA4/S2r3+HuHibqvbrPcyf858lNzU7bFmy4mLeIHFYr34ar/1KumwyRw==
+"@typescript-eslint/typescript-estree@4.12.0":
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.12.0.tgz#3963418c850f564bdab3882ae23795d115d6d32e"
+  integrity sha512-gZkFcmmp/CnzqD2RKMich2/FjBTsYopjiwJCroxqHZIY11IIoN0l5lKqcgoAPKHt33H2mAkSfvzj8i44Jm7F4w==
   dependencies:
-    "@typescript-eslint/types" "4.11.1"
-    "@typescript-eslint/visitor-keys" "4.11.1"
+    "@typescript-eslint/types" "4.12.0"
+    "@typescript-eslint/visitor-keys" "4.12.0"
     debug "^4.1.1"
     globby "^11.0.1"
     is-glob "^4.0.1"
@@ -530,12 +530,12 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/visitor-keys@4.11.1":
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.11.1.tgz#4c050a4c1f7239786e2dd4e69691436143024e05"
-  integrity sha512-IrlBhD9bm4bdYcS8xpWarazkKXlE7iYb1HzRuyBP114mIaj5DJPo11Us1HgH60dTt41TCZXMaTCAW+OILIYPOg==
+"@typescript-eslint/visitor-keys@4.12.0":
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.12.0.tgz#a470a79be6958075fa91c725371a83baf428a67a"
+  integrity sha512-hVpsLARbDh4B9TKYz5cLbcdMIOAoBYgFPCSP9FFS/liSF+b33gVNq8JHY3QGhHNVz85hObvL7BEYLlgx553WCw==
   dependencies:
-    "@typescript-eslint/types" "4.11.1"
+    "@typescript-eslint/types" "4.12.0"
     eslint-visitor-keys "^2.0.0"
 
 acorn-jsx@^5.3.1:
@@ -566,6 +566,16 @@ ajv@^6.10.0, ajv@^6.12.4, ajv@~6.12.0, ajv@~6.12.6:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
+ajv@^7.0.2:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-7.0.3.tgz#13ae747eff125cafb230ac504b2406cf371eece2"
+  integrity sha512-R50QRlXSxqXcQP5SvKUrw8VZeypvo12i2IX0EeR5PiZ7bEKeHWgzgo264LDadUsCU42lTJVhFikTqJwNeH34gQ==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    json-schema-traverse "^1.0.0"
+    require-from-string "^2.0.2"
+    uri-js "^4.2.2"
+
 angular-html-parser@~1.7.0:
   version "1.7.1"
   resolved "https://registry.yarnpkg.com/angular-html-parser/-/angular-html-parser-1.7.1.tgz#735cb9f2f01151e6d612b580812256a289e728a4"
@@ -1077,9 +1087,9 @@ eslint-visitor-keys@^2.0.0:
   integrity sha512-QudtT6av5WXels9WjIM7qz1XD1cWGvX4gGXvp/zBn9nXG02D0utdU3Em2m/QjTnrsk6bBjmCygl3rmj118msQQ==
 
 eslint@^7.14.0:
-  version "7.16.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.16.0.tgz#a761605bf9a7b32d24bb7cde59aeb0fd76f06092"
-  integrity sha512-iVWPS785RuDA4dWuhhgXTNrGxHHK3a8HLSMBgbbU59ruJDubUraXN8N5rn7kb8tG6sjg74eE0RA3YWT51eusEw==
+  version "7.17.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.17.0.tgz#4ccda5bf12572ad3bf760e6f195886f50569adb0"
+  integrity sha512-zJk08MiBgwuGoxes5sSQhOtibZ75pz0J35XTRlZOk9xMffhpA9BTbQZxoXZzOl5zMbleShbGwtw+1kGferfFwQ==
   dependencies:
     "@babel/code-frame" "^7.0.0"
     "@eslint/eslintrc" "^0.2.2"
@@ -1393,9 +1403,9 @@ globals@^12.1.0:
     type-fest "^0.8.1"
 
 globby@^11.0.1:
-  version "11.0.1"
-  resolved "https://registry.yarnpkg.com/globby/-/globby-11.0.1.tgz#9a2bf107a068f3ffeabc49ad702c79ede8cfd357"
-  integrity sha512-iH9RmgwCmUJHi2z5o2l3eTtGBtXek1OYlHrbcxOYugyHLmAsZrPj43OtHThd62Buh/Vv6VyCBD2bdyWcGNQqoQ==
+  version "11.0.2"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-11.0.2.tgz#1af538b766a3b540ebfb58a32b2e2d5897321d83"
+  integrity sha512-2ZThXDvvV8fYFRVIxnrMQBipZQDr7MxKAmQK1vujaj9/7eF0efG7BPUKJ7jP7G5SLF37xKDXvO4S/KKLj/Z0og==
   dependencies:
     array-union "^2.1.0"
     dir-glob "^3.0.1"
@@ -1716,6 +1726,11 @@ json-schema-traverse@^0.4.1:
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
   integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
 
+json-schema-traverse@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz#ae7bcb3656ab77a73ba5c49bf654f38e6b6860e2"
+  integrity sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==
+
 json-stable-stringify-without-jsonify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
@@ -2211,6 +2226,11 @@ require-directory@^2.1.1:
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
   integrity sha1-jGStX9MNqxyXbiNE/+f3kqam30I=
 
+require-from-string@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.2.tgz#89a7fdd938261267318eafe14f9c32e598c36909"
+  integrity sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==
+
 require-main-filename@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-2.0.0.tgz#d0b329ecc7cc0f61649f62215be69af54aa8989b"
@@ -2491,11 +2511,11 @@ surrial@~2.0.2:
   integrity sha512-YQ0XyrdBI8Kx10lIK81zOGXdGtc0P+3FTqEtCdaKzfEJKJWDju2QPp+XhzihmN2KOTRDtkKSyQQXZHYP+SqapA==
 
 table@^6.0.4:
-  version "6.0.4"
-  resolved "https://registry.yarnpkg.com/table/-/table-6.0.4.tgz#c523dd182177e926c723eb20e1b341238188aa0d"
-  integrity sha512-sBT4xRLdALd+NFBvwOz8bw4b15htyythha+q+DVZqy2RS08PPC8O2sZFgJYEY7bJvbCFKccs+WIZ/cd+xxTWCw==
+  version "6.0.7"
+  resolved "https://registry.yarnpkg.com/table/-/table-6.0.7.tgz#e45897ffbcc1bcf9e8a87bf420f2c9e5a7a52a34"
+  integrity sha512-rxZevLGTUzWna/qBLObOe16kB2RTnnbhciwgPbMMlazz1yZGVEgnZK762xyVdVznhqxrfCeBMmMkgOOaPwjH7g==
   dependencies:
-    ajv "^6.12.4"
+    ajv "^7.0.2"
     lodash "^4.17.20"
     slice-ansi "^4.0.0"
     string-width "^4.2.0"
@@ -2576,9 +2596,9 @@ tslib@~2.0.0:
   integrity sha512-uZtkfKblCEQtZKBF6EBXVZeQNl82yqtDQdv+eck8u7tdPxjLu2/lp5/uPW+um2tpuxINHWy3GhiccY7QgEaVHQ==
 
 tsutils@^3.17.1:
-  version "3.17.1"
-  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-3.17.1.tgz#ed719917f11ca0dee586272b2ac49e015a2dd759"
-  integrity sha512-kzeQ5B8H3w60nFY2g8cJIuH7JDpsALXySGtwGJ0p2LSjLgay3NdIpqq5SoOBe46bKDW2iq25irHCr8wjomUS2g==
+  version "3.18.0"
+  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-3.18.0.tgz#38add50a28ec97e988cb43c5b32e55d1ff4a222a"
+  integrity sha512-D9Tu8nE3E7D1Bsf/V29oMHceMf+gnVO+pDguk/A5YRo1cLpkiQ48ZnbbS57pvvHeY+OIeNQx1vf4ASPlEtRpcA==
   dependencies:
     tslib "^1.8.1"