fix: add support for TypeScript 4.0 (#4943)

Closes #4941

Author: alan-agius4

package.json

@@ -40,11 +40,11 @@
  "mkdirp": "^0.5.3",
  "resolve": "^1.3.2",
  "semver": "^5.3.0",
- "tslib": "^1.10.0",
+ "tslib": "^1.13.0",
  "tsutils": "^2.29.0"
  },
  "peerDependencies": {
- "typescript": ">=2.3.0-dev || >=2.4.0-dev || >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-dev || >=2.8.0-dev || >=2.9.0-dev || >=3.0.0-dev || >= 3.1.0-dev || >= 3.2.0-dev"
+ "typescript": ">=2.3.0-dev || >=2.4.0-dev || >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-dev || >=2.8.0-dev || >=2.9.0-dev || >=3.0.0-dev || >= 3.1.0-dev || >= 3.2.0-dev || >= 4.0.0-dev"
  },
  "devDependencies": {
  "@octokit/rest": "^16.24.3",
@@ -73,7 +73,7 @@
  "tslint-config-prettier": "^1.18.0",
  "tslint-plugin-prettier": "^2.0.1",
  "tslint-test-config-non-relative": "file:test/external/tslint-test-config-non-relative",
- "typescript": "~3.8.2",
+ "typescript": "~4.0.0-beta",
  "yarn-deduplicate": "^1.1.1"
  },
  "engines": {

src/rules/alignRule.ts

@@ -142,7 +142,9 @@ class AlignWalker extends Lint.AbstractWalker<Options> {
  case ts.SyntaxKind.TupleType:
  if (this.options.elements) {
  this.checkAlignment(
- (node as ts.TupleTypeNode).elementTypes,
+ // In TS 4 TupleTypeNode.elementTypes has been updated to elements
+ // tslint:disable-next-line
+ (node as any).elementTypes || (node as ts.TupleTypeNode).elements,
  OPTION_ELEMENTS,
  );
  }

src/rules/noRedundantJsdocRule.ts

@@ -73,7 +73,7 @@ function walk(ctx: Lint.WalkContext): void {
  );
  }
  break;
-
+ case ts.SyntaxKind.JSDocDeprecatedTag:
  case ts.SyntaxKind.JSDocAugmentsTag:
  case ts.SyntaxKind.JSDocAuthorTag:
  // OK

src/rules/oneLineRule.ts

@@ -87,7 +87,7 @@ class OneLineWalker extends Lint.AbstractWalker<Options> {
  if (
  !isBlockLike(node.parent) ||
  (node.parent.kind === ts.SyntaxKind.CaseClause &&
- (node.parent as ts.CaseClause).statements.length === 1)
+ node.parent.statements.length === 1)
  ) {
  this.check({ pos: node.pos, end: (node as ts.Block).statements.pos });
  }

yarn.lock

@@ -1822,10 +1822,10 @@ tsconfig@^6.0.0:
  strip-bom "^3.0.0"
  strip-json-comments "^2.0.0"
 
-tslib@^1.10.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1:
- version "1.10.0"
- resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
- integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
+tslib@^1.13.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1:
+ version "1.13.0"
+ resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.13.0.tgz#c881e13cc7015894ed914862d276436fa9a47043"
+ integrity sha512-i/6DQjL8Xf3be4K/E6Wgpekn5Qasl1usyw++dAA35Ue5orEn65VIxOA+YvNNl9HV3qv70T7CNwjODHZrLwvd1Q==
 
 tslint-config-prettier@^1.18.0:
  version "1.18.0"
@@ -1880,10 +1880,10 @@ type-detect@^1.0.0:
  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-1.0.0.tgz#762217cc06db258ec48908a1298e8b95121e8ea2"
  integrity sha1-diIXzAbbJY7EiQihKY6LlRIejqI=
 
-typescript@~3.8.2:
- version "3.8.2"
- resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.2.tgz#91d6868aaead7da74f493c553aeff76c0c0b1d5a"
- integrity sha512-EgOVgL/4xfVrCMbhYKUQTdF37SQn4Iw73H5BgCrF1Abdun7Kwy/QZsE/ssAy0y4LxBbvua3PIbFsbRczWWnDdQ==
+typescript@~4.0.0-beta:
+ version "4.0.0-dev.20200730"
+ resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.0-dev.20200730.tgz#0c1e874cbbfc702c32d9ac261c2f9dc9c37b14c1"
+ integrity sha512-bqw862eRy5niIZgCJTmn9DqkHTPoCF2eLlLA6jmOvubOgN8BNQrsaf+fE4PQkhzk9ae1/T9iAmDhapgmwWMHIA==
 
 uglify-js@^3.1.4:
  version "3.5.11"