3.0.16

.gitignore

@@ -1,4 +1,22 @@
-.yarn/
-pages/
+.nogit/
+
+# artifacts
+coverage/
 public/
+pages/
+
+# installs
 node_modules/
+
+# caches
+.yarn/
+.cache/
+.rpt2_cache
+
+# builds
+dist/
+dist_web/
+dist_serve/
+dist_ts_web/
+
+# custom

.gitlab-ci.yml

@@ -1,16 +1,16 @@
-# gitzone standard
-image: hosttoday/ht-docker-node:npmci
+# gitzone ci_default
+image: registry.gitlab.com/hosttoday/ht-docker-node:npmci
 
 cache:
   paths:
-  - .npmci_cache/
-  key: "$CI_BUILD_STAGE"
+    - .npmci_cache/
+  key: '$CI_BUILD_STAGE'
 
 stages:
-- security
-- test
-- release
-- metadata
+  - security
+  - test
+  - release
+  - metadata
 
 # ====================
 # security stage
@@ -18,109 +18,103 @@ stages:
 mirror:
   stage: security
   script:
-  - npmci git mirror
+    - npmci git mirror
   tags:
-  - docker
-  - notpriv
+    - lossless
+    - docker
+    - notpriv
 
 snyk:
+  image: registry.gitlab.com/hosttoday/ht-docker-node:snyk
   stage: security
   script:
-    - npmci command npm install -g snyk
+    - npmci npm prepare
     - npmci command npm install --ignore-scripts
     - npmci command snyk test
   tags:
-  - docker
-  - notpriv
+    - lossless
+    - docker
+    - notpriv
 
 # ====================
 # test stage
 # ====================
-testLEGACY:
-  stage: test
-  script:
-  - npmci node install legacy
-  - npmci npm install
-  - npmci npm test
-  coverage: /\d+.?\d+?\%\s*coverage/
-  tags:
-  - docker
-  - notpriv
-  allow_failure: true
 
-testLTS:
+testStable:
   stage: test
   script:
-  - npmci node install lts
-  - npmci npm install
-  - npmci npm test
+    - npmci npm prepare
+    - npmci node install stable
+    - npmci npm install
+    - npmci npm test
   coverage: /\d+.?\d+?\%\s*coverage/
   tags:
-  - docker
-  - notpriv
-    
-testSTABLE:
+    - lossless
+    - docker
+    - priv
+
+testBuild:
   stage: test
   script:
-  - npmci node install stable
-  - npmci npm install
-  - npmci npm test
+    - npmci npm prepare
+    - npmci node install stable
+    - npmci npm install
+    - npmci command npm run build
   coverage: /\d+.?\d+?\%\s*coverage/
   tags:
-  - docker
-  - notpriv
+    - lossless
+    - docker
+    - notpriv
 
 release:
   stage: release
   script:
-  - npmci node install stable
-  - npmci npm publish
+    - npmci node install stable
+    - npmci npm publish
   only:
-  - tags
+    - tags
   tags:
-  - docker
-  - notpriv
+    - lossless
+    - docker
+    - notpriv
 
 # ====================
 # metadata stage
 # ====================
 codequality:
   stage: metadata
-  image: docker:stable
   allow_failure: true
-  services:
-    - docker:stable-dind
   script:
-    - export SP_VERSION=$(echo "$CI_SERVER_VERSION" | sed 's/^\([0-9]*\)\.\([0-9]*\).*/\1-\2-stable/')
-    - docker run
-        --env SOURCE_CODE="$PWD"
-        --volume "$PWD":/code
-        --volume /var/run/docker.sock:/var/run/docker.sock
-        "registry.gitlab.com/gitlab-org/security-products/codequality:$SP_VERSION" /code
-  artifacts:
-    paths: [codeclimate.json]
+    - npmci command npm install -g tslint typescript
+    - npmci npm prepare
+    - npmci npm install
+    - npmci command "tslint -c tslint.json ./ts/**/*.ts"
   tags:
-  - docker
-  - priv
+    - lossless
+    - docker
+    - priv
 
 trigger:
   stage: metadata
   script:
-  - npmci trigger
+    - npmci trigger
   only:
-  - tags
+    - tags
   tags:
-  - docker
-  - notpriv
+    - lossless
+    - docker
+    - notpriv
 
 pages:
-  image: hosttoday/ht-docker-node:npmci
   stage: metadata
   script:
-    - npmci command npm install -g typedoc typescript
+    - npmci node install lts
+    - npmci command npm install -g @gitzone/tsdoc
+    - npmci npm prepare
     - npmci npm install
-    - npmci command typedoc --module "commonjs" --target "ES2016" --out public/ ts/
+    - npmci command tsdoc
   tags:
+    - lossless
     - docker
     - notpriv
   only:
@@ -128,15 +122,5 @@ pages:
   artifacts:
     expire_in: 1 week
     paths:
-    - public
-  allow_failure: true
-
-windowsCompatibility:
-  image: stefanscherer/node-windows:10-build-tools
-  stage: metadata
-  script:
-  - npm install & npm test
-  coverage: /\d+.?\d+?\%\s*coverage/
-  tags:
-  - windows
+      - public
   allow_failure: true

LICENSE

@@ -1,6 +1,7 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Push.Rocks
+Copyright (c) 2014 Maurice Butler
+Copyright (c) 2016 Lossless GmbH
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,70 +0,0 @@
-# smartstring
-
-handle strings in smart ways. TypeScript ready.
-
-## Availabililty
-
-[![npm](https://pushrocks.gitlab.io/assets/repo-button-npm.svg)](https://www.npmjs.com/package/smartstring)
-[![git](https://pushrocks.gitlab.io/assets/repo-button-git.svg)](https://GitLab.com/pushrocks/smartstring)
-[![git](https://pushrocks.gitlab.io/assets/repo-button-mirror.svg)](https://github.com/pushrocks/smartstring)
-[![docs](https://pushrocks.gitlab.io/assets/repo-button-docs.svg)](https://pushrocks.gitlab.io/smartstring/)
-
-## Status for master
-
-[![build status](https://GitLab.com/pushrocks/smartstring/badges/master/build.svg)](https://GitLab.com/pushrocks/smartstring/commits/master)
-[![coverage report](https://GitLab.com/pushrocks/smartstring/badges/master/coverage.svg)](https://GitLab.com/pushrocks/smartstring/commits/master)
-[![npm downloads per month](https://img.shields.io/npm/dm/smartstring.svg)](https://www.npmjs.com/package/smartstring)
-[![Dependency Status](https://david-dm.org/pushrocks/smartstring.svg)](https://david-dm.org/pushrocks/smartstring)
-[![bitHound Dependencies](https://www.bithound.io/github/pushrocks/smartstring/badges/dependencies.svg)](https://www.bithound.io/github/pushrocks/smartstring/master/dependencies/npm)
-[![bitHound Code](https://www.bithound.io/github/pushrocks/smartstring/badges/code.svg)](https://www.bithound.io/github/pushrocks/smartstring)
-[![TypeScript](https://img.shields.io/badge/TypeScript-2.x-blue.svg)](https://nodejs.org/dist/latest-v6.x/docs/api/)
-[![node](https://img.shields.io/badge/node->=%206.x.x-blue.svg)](https://nodejs.org/dist/latest-v6.x/docs/api/)
-[![JavaScript Style Guide](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](http://standardjs.com/)
-
-## Usage
-
-Use TypeScript for best in class instellisense.
-
-```javascript
-import * as smartstring from 'smartstring';
-
-// classes
-
-// smartstring.Domain class
-let myDomain = new smartstring.Domain('https://sub.main.tld');
-myDomain.level1; // "tld"
-myDomain.level2; // "main"
-// level3 , level 4 and so on...
-myDomain.zoneName; // "main.tld"
-myDOmain.protocol; // "https"
-
-// smartstring.GitRepo class
-let myGitRepo = new smartstring.GitRepo('git@github.com:someorg/somerepo.git'); // takes https and git and npm repo URL versions
-myGitRepo.host; // "github.com"
-myGitRepo.user; // "someorg"
-myGitRepo.repo; // "somerepo"
-myGitRepo.accessToken; // accessToken if specified with https
-myGitRepo.sshUrl; // "git@github.com:someorg/somerepo.git" (computed also from https)
-myGitRepo.httpsUrl; // "https://github.com/someorg/somerepo.git" (computed also from ssh)
-
-//smartstring.Base64
-let myBase64 = new smartstring.Base64('somestring', 'string'); // first arg is the string, second is string type (can be string, base64, base64uri)
-myBase64.simpleString; // 'somestring'
-myBase64.base64String; // base64 representation of 'somestring'
-myBase64.base64UriString; // base64uri representation of 'sometring'
-
-// methods
-smartstring.base64.encode('somestring'); // encodes 'somestring' to base64
-smartstring.base64.encodeUri('sometring'); // encodes 'somestring' to base64uri
-smartstring.base64.decode(); // decodes base64 and base64uri to simple string respresentation
-
-smartstring.indent.indent('somestringanotherstring', 4); // indents a string by 4
-smartstring.indent.indent('somestringanotherstring', '>>>> '); // indents a string with a prefix
-smartstring.indent.normalize('    somestring        anotherstring', '>>>> '); // looks for the least amount of indention and removes superflouous space
-```
-
-For further information read the linked docs at the top of this README.
-
-> MIT licensed | **©** [Lossless GmbH](https://lossless.gmbh)
-
-[![repo-footer](https://pushrocks.gitlab.io/assets/repo-footer.svg)](https://push.rocks)

npmextra.json

@@ -1,13 +1,21 @@
 {
   "npmci": {
-    "npmGlobalTools": [
-      "@gitzone/npmts"
-    ],
+    "npmGlobalTools": [],
     "npmAccessLevel": "public"
   },
   "npmdocker": {
     "baseImage": "hosttoday/ht-docker-node:npmci",
     "command": "npmci node install stable && npmci npm install && npmci npm test",
     "dockerSock": false
+  },
+  "gitzone": {
+    "module": {
+      "githost": "gitlab.com",
+      "gitscope": "pushrocks",
+      "gitrepo": "smartstring",
+      "shortDescription": "handle strings in smart ways. TypeScript ready.",
+      "npmPackagename": "@pushrocks/smartstring",
+      "license": "MIT"
+    }
   }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@pushrocks/smartstring",
-  "version": "3.0.3",
+  "version": "3.0.16",
   "private": false,
   "description": "handle strings in smart ways. TypeScript ready.",
   "main": "dist/index.js",
@@ -24,17 +24,30 @@
   },
   "homepage": "https://gitlab.com/pushrocks/smartstring#readme",
   "devDependencies": {
-    "@gitzone/tsbuild": "^2.0.22",
-    "@gitzone/tsrun": "^1.1.12",
-    "@gitzone/tstest": "^1.0.15",
-    "@pushrocks/tapbundle": "^3.0.5",
-    "@types/node": "^10.5.8"
+    "@gitzone/tsbuild": "^2.1.17",
+    "@gitzone/tsrun": "^1.2.8",
+    "@gitzone/tstest": "^1.0.28",
+    "@pushrocks/tapbundle": "^3.0.13",
+    "@types/node": "^12.7.12",
+    "tslint": "^5.20.0",
+    "tslint-config-prettier": "^1.18.0"
   },
   "dependencies": {
-    "crypto-random-string": "^1.0.0",
-    "js-base64": "^2.4.8",
+    "crypto-random-string": "^3.0.1",
+    "js-base64": "^2.5.1",
     "normalize-newline": "^3.0.0",
-    "randomatic": "^3.1.0",
-    "strip-indent": "^2.0.0"
-  }
+    "randomatic": "^3.1.1",
+    "strip-indent": "^3.0.0"
+  },
+  "files": [
+    "ts/**/*",
+    "ts_web/**/*",
+    "dist/**/*",
+    "dist_web/**/*",
+    "dist_ts_web/**/*",
+    "assets/**/*",
+    "cli.js",
+    "npmextra.json",
+    "readme.md"
+  ]
 }

test/test.normalize.ts

@@ -0,0 +1,19 @@
+import { tap, expect } from '@pushrocks/tapbundle';
+
+import * as smartstring from '../ts/index';
+
+tap.test('should normalize a string', async () => {
+  const testString = `
+    myawesome string;
+      is indented with two spaces
+  `;
+  const normalizedString = smartstring.normalize.standard(testString);
+  expect(normalizedString).to.equal(
+    `
+myawesome string;
+  is indented with two spaces
+  `
+  );
+});
+
+tap.start();

test/test.type.ts

@@ -0,0 +1,14 @@
+import { tap, expect } from '@pushrocks/tapbundle';
+import * as smartstring from '../ts';
+
+tap.test('should state valuid utf8', async () => {
+  expect(smartstring.type.isUtf8('hithere')).to.be.true;
+});
+
+tap.test('should state wether base64 string is valid', async () => {
+  const base64String = smartstring.base64.encode('hi there');
+  expect(smartstring.type.isBase64(base64String)).to.be.true;
+  expect(smartstring.type.isBase64('hi there')).to.be.false;
+});
+
+tap.start();

ts/index.ts

@@ -2,9 +2,12 @@ import * as create from './smartstring.create';
 import * as docker from './smartstring.docker';
 import * as indent from './smartstring.indent';
 import * as normalize from './smartstring.normalize';
+import * as type from './smartstring.type';
 
-export { create, docker, normalize, indent };
+export { create, docker, normalize, indent, type };
 
 export { Base64, base64 } from './smartstring.base64';
 export { Domain } from './smartstring.domain';
 export { GitRepo } from './smartstring.git';
+
+export { Cryptr } from './smartstring.encryption';

ts/smartstring.create.ts

@@ -1,13 +1,29 @@
 import * as plugins from './smartstring.plugins';
 
+/**
+ * creates a random string
+ *
+ * ```ts
+ * createRandomString('AAAA')
+ * //=> 'AGHR'
+ * ```
+ *
+ * @param patternArg the pattern argument to use, Aa0!* are viable pattern descritors
+ * @param lengthArg  the length of the random string
+ * @param optionsArg options
+ */
 export const createRandomString = (
   patternArg: string,
-  lengthArg: number,
-  optionsArg: any
+  lengthArg?: number,
+  optionsArg?: any
 ): string => {
   return plugins.randomatic(patternArg, lengthArg, optionsArg);
 };
 
-export const createCryptoRandomString = (lengthArg): string => {
+/**
+ * creates a crytic string in the speicifed length
+ * @param lengthArg the length of the crypto string
+ */
+export const createCryptoRandomString = (lengthArg: number): string => {
   return plugins.cryptoRandomString(lengthArg);
 };

ts/smartstring.domain.ts

@@ -1,24 +1,26 @@
 import * as plugins from './smartstring.plugins';
 
 export class Domain {
-  fullName: string;
-  level1: string;
-  level2: string;
-  level3: string;
-  level4: string;
-  level5: string;
-  protocol: string;
-  zoneName: string;
+  public fullName: string;
+  public level1: string;
+  public level2: string;
+  public level3: string;
+  public level4: string;
+  public level5: string;
+  public protocol: string;
+  public zoneName: string;
   // aliases
-  topLevel: string;
-  domainName;
-  subDomain;
+  public topLevel: string;
+  public domainName;
+  public subDomain;
+  public port;
+  public nodeParsedUrl: plugins.url.UrlWithStringQuery;
   constructor(domainStringArg: string) {
-    let regexMatches = domainRegex(domainStringArg);
+    const regexMatches = this._domainRegex(domainStringArg);
     this.fullName = '';
     for (let i = 1; i <= 5; i++) {
       if (regexMatches[i - 1]) {
-        let localMatch = regexMatches[i - 1];
+        const localMatch = regexMatches[i - 1];
         this['level' + i.toString()] = localMatch;
         if (this.fullName === '') {
           this.fullName = localMatch;
@@ -29,33 +31,49 @@ export class Domain {
         this['level' + i.toString()] = undefined;
       }
     }
-    this.protocol = protocolRegex(domainStringArg);
+    this.protocol = this._protocolRegex(domainStringArg);
     this.zoneName = this.level2 + '.' + this.level1;
 
     // aliases
     this.topLevel = this.level1;
     this.domainName = this.level2;
     this.subDomain = this.level3;
+
+    this.nodeParsedUrl = plugins.url.parse(domainStringArg);
+    this.port = this.nodeParsedUrl.port;
+  }
+
+  // helper functions
+
+  /** */
+  private _domainRegex(stringArg: string) {
+    const regexString = /([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}$/;
+    const regexMatches = regexString.exec(stringArg);
+    regexMatches.reverse(); //make sure we build the domain from toplevel to subdomain (reversed order)
+    regexMatches.pop(); // pop the last element, which is, since we reversed the Array, the full String of matched elements
+    const regexMatchesFiltered = regexMatches.filter(function(stringArg: string) {
+      return stringArg !== '';
+    });
+    return regexMatchesFiltered;
+  }
+
+  private _protocolRegex(stringArg: string) {
+    const regexString = /^([a-zA-Z0-9]*):\/\//;
+    const regexMatches = regexString.exec(stringArg);
+    if (regexMatches) {
+      return regexMatches[1];
+    } else {
+      return undefined;
+    }
+  }
+
+  private _portRegex(stringArg: string) {
+    const regexString = /^([a-zA-Z0-9]*):\/\//;
+    const regexMatches = regexString.exec(stringArg);
+    if (regexMatches) {
+      return regexMatches[1];
+    } else {
+      return undefined;
+    }
   }
 }
-
-let domainRegex = function(stringArg: string) {
-  let regexString = /([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}([a-zA-Z0-9\-\_]*)\.{0,1}$/;
-  let regexMatches = regexString.exec(stringArg);
-  regexMatches.reverse(); //make sure we build the domain from toplevel to subdomain (reversed order)
-  regexMatches.pop(); // pop the last element, which is, since we reversed the Array, the full String of matched elements
-  let regexMatchesFiltered = regexMatches.filter(function(stringArg: string) {
-    return stringArg !== '';
-  });
-  return regexMatchesFiltered;
-};
-
-let protocolRegex = function(stringArg: string) {
-  let regexString = /^([a-zA-Z0-9]*):\/\//;
-  let regexMatches = regexString.exec(stringArg);
-  if (regexMatches) {
-    return regexMatches[1];
-  } else {
-    return undefined;
-  }
-};

ts/smartstring.encryption.ts

@@ -0,0 +1,43 @@
+import * as plugins from './smartstring.plugins';
+
+const algorithm = 'aes-256-ctr';
+
+export class Cryptr {
+  private key: Buffer;
+
+  constructor(secret) {
+    if (!secret || typeof secret !== 'string') {
+      throw new Error('Cryptr: secret must be a non-0-length string');
+    }
+
+    this.key = plugins.crypto
+      .createHash('sha256')
+      .update(String(secret))
+      .digest();
+  }
+
+  encrypt(value: string) {
+    if (value == null) {
+      throw new Error('value must not be null or undefined');
+    }
+
+    const iv = plugins.crypto.randomBytes(16);
+    const cipher = plugins.crypto.createCipheriv(algorithm, this.key, iv);
+    const encrypted = cipher.update(String(value), 'utf8', 'hex') + cipher.final('hex');
+
+    return iv.toString('hex') + encrypted;
+  }
+
+  decrypt(value: string) {
+    if (value == null) {
+      throw new Error('value must not be null or undefined');
+    }
+
+    const stringValue = String(value);
+    const iv = Buffer.from(stringValue.slice(0, 32), 'hex');
+    const encrypted = stringValue.slice(32);
+
+    const decipher = plugins.crypto.createDecipheriv(algorithm, this.key, iv);
+    return decipher.update(encrypted, 'hex', 'utf8') + decipher.final('utf8');
+  }
+}

ts/smartstring.normalize.ts

@@ -3,11 +3,11 @@ import * as plugins from './smartstring.plugins';
 /**
  * replaces all occurences of something in a string
  * @param stringArg
- * @param searchRegExp
+ * @param searchPattern
  * @param replacementString
  */
-export const replaceAll = (stringArg: string, searchRegExp: any, replacementString: string) => {
-  return stringArg.replace(new RegExp(searchRegExp, 'g'), replacementString);
+export const replaceAll = (stringArg: string, searchPattern: string, replacementString: string) => {
+  return stringArg.replace(new RegExp(searchPattern, 'g'), replacementString);
 };
 
 /**
@@ -17,6 +17,6 @@ export const replaceAll = (stringArg: string, searchRegExp: any, replacementStri
 export const standard = (stringArg: string): string => {
   let fix1 = plugins.stripIndent(stringArg); // fix indention
   let fix2 = plugins.normalizeNewline(fix1); // fix newlines
-  let fix3 = replaceAll(fix2, /\t/, ' '); // fix tabs
+  let fix3 = replaceAll(fix2, '\t/', ' '); // fix tabs
   return fix3;
 };

ts/smartstring.plugins.ts

@@ -1,3 +1,10 @@
+// node native
+import crypto from 'crypto';
+import * as url from 'url';
+
+export { crypto, url };
+
+// third party
 export let jsBase64 = require('js-base64').Base64;
 
 export let stripIndent = require('strip-indent');

ts/smartstring.type.ts

@@ -0,0 +1,99 @@
+import * as plugins from './smartstring.plugins';
+import * as base64 from './smartstring.base64';
+
+export const isUtf8 = (stringArg: string) => {
+  const bytes = Buffer.from(stringArg);
+  let i = 0;
+  while (i < bytes.length) {
+    if (
+      // ASCII
+      bytes[i] === 0x09 ||
+      bytes[i] === 0x0a ||
+      bytes[i] === 0x0d ||
+      (0x20 <= bytes[i] && bytes[i] <= 0x7e)
+    ) {
+      i += 1;
+      continue;
+    }
+
+    if (
+      // non-overlong 2-byte
+      0xc2 <= bytes[i] &&
+      bytes[i] <= 0xdf &&
+      0x80 <= bytes[i + 1] &&
+      bytes[i + 1] <= 0xbf
+    ) {
+      i += 2;
+      continue;
+    }
+
+    if (
+      // excluding overlongs
+      (bytes[i] === 0xe0 &&
+        0xa0 <= bytes[i + 1] &&
+        bytes[i + 1] <= 0xbf &&
+        0x80 <= bytes[i + 2] &&
+        bytes[i + 2] <= 0xbf) || // straight 3-byte
+      (((0xe1 <= bytes[i] && bytes[i] <= 0xec) || bytes[i] === 0xee || bytes[i] === 0xef) &&
+        0x80 <= bytes[i + 1] &&
+        bytes[i + 1] <= 0xbf &&
+        0x80 <= bytes[i + 2] &&
+        bytes[i + 2] <= 0xbf) || // excluding surrogates
+      (bytes[i] === 0xed &&
+        0x80 <= bytes[i + 1] &&
+        bytes[i + 1] <= 0x9f &&
+        0x80 <= bytes[i + 2] &&
+        bytes[i + 2] <= 0xbf)
+    ) {
+      i += 3;
+      continue;
+    }
+
+    if (
+      // planes 1-3
+      (bytes[i] === 0xf0 &&
+        0x90 <= bytes[i + 1] &&
+        bytes[i + 1] <= 0xbf &&
+        0x80 <= bytes[i + 2] &&
+        bytes[i + 2] <= 0xbf &&
+        0x80 <= bytes[i + 3] &&
+        bytes[i + 3] <= 0xbf) || // planes 4-15
+      (0xf1 <= bytes[i] &&
+        bytes[i] <= 0xf3 &&
+        0x80 <= bytes[i + 1] &&
+        bytes[i + 1] <= 0xbf &&
+        0x80 <= bytes[i + 2] &&
+        bytes[i + 2] <= 0xbf &&
+        0x80 <= bytes[i + 3] &&
+        bytes[i + 3] <= 0xbf) || // plane 16
+      (bytes[i] === 0xf4 &&
+        0x80 <= bytes[i + 1] &&
+        bytes[i + 1] <= 0x8f &&
+        0x80 <= bytes[i + 2] &&
+        bytes[i + 2] <= 0xbf &&
+        0x80 <= bytes[i + 3] &&
+        bytes[i + 3] <= 0xbf)
+    ) {
+      i += 4;
+      continue;
+    }
+
+    return false;
+  }
+
+  return true;
+};
+
+export const isBase64 = (stringArg: string) => {
+  const notBase64 = /[^A-Z0-9+\/=]/i;
+  const len = stringArg.length;
+  if (!len || len % 4 !== 0 || notBase64.test(stringArg)) {
+    return false;
+  }
+  const firstPaddingChar = stringArg.indexOf('=');
+  return (
+    firstPaddingChar === -1 ||
+    firstPaddingChar === len - 1 ||
+    (firstPaddingChar === len - 2 && stringArg[len - 1] === '=')
+  );
+};

tslint.json

@@ -1,3 +1,17 @@
 {
-    "extends": "tslint-config-standard"
+  "extends": ["tslint:latest", "tslint-config-prettier"],
+  "rules": {
+    "semicolon": [true, "always"],
+    "no-console": false,
+    "ordered-imports": false,
+    "object-literal-sort-keys": false,
+    "member-ordering": {
+      "options":{
+        "order": [
+          "static-method"
+        ]
+      }
+    }
+  },
+  "defaultSeverity": "warning"
 }