Drop support for 2.0 2.7 (#264)

* Switch to supported versions of Typescript

I still need to update package-lock.json when I install the shipping
version of definitelytyped-header-parser.

* Upgrade definitelytyped-header-parser

Also fix some lint

package.json

@@ -27,7 +27,7 @@
     "prepublishOnly": "npm run build && npm run test && npm run lint"
   },
   "dependencies": {
-    "definitelytyped-header-parser": "3.8.0",
+    "definitelytyped-header-parser": "3.8.1",
     "dts-critic": "^2.2.0",
     "fs-extra": "^6.0.1",
     "request": "^2.88.0",

src/index.ts

@@ -1,6 +1,11 @@
 #!/usr/bin/env node
 
-import { isTypeScriptVersion, parseTypeScriptVersionLine, TypeScriptVersion } from "definitelytyped-header-parser";
+import {
+    AllTypeScriptVersion,
+    isTypeScriptVersion,
+    parseTypeScriptVersionLine,
+    TypeScriptVersion,
+} from "definitelytyped-header-parser";
 import { readdir, readFile, stat } from "fs-extra";
 import { basename, dirname, join as joinPaths, resolve } from "path";
 
@@ -192,7 +197,9 @@ async function testTypesVersion(
     if (minVersionFromComment !== undefined && inTypesVersionDirectory) {
         throw new Error(`Already in the \`ts${lowVersion}\` directory, don't need \`// TypeScript Version\`.`);
     }
-    const minVersion = lowVersion || minVersionFromComment || TypeScriptVersion.lowest;
+    const minVersion = lowVersion
+        || minVersionFromComment && TypeScriptVersion.isSupported(minVersionFromComment) && minVersionFromComment
+        || TypeScriptVersion.lowest;
 
     await checkTslintJson(dirPath, dt);
     await checkTsconfig(dirPath, dt
@@ -230,7 +237,7 @@ function assertPathIsNotBanned(dirPath: string) {
     }
 }
 
-function getTypeScriptVersionFromComment(text: string): TypeScriptVersion | undefined {
+function getTypeScriptVersionFromComment(text: string): AllTypeScriptVersion | undefined {
     const searchString = "// TypeScript Version: ";
     const x = text.indexOf(searchString);
     if (x === -1) {

src/installer.ts

@@ -9,9 +9,9 @@ import { TsVersion } from "./lint";
 const installsDir = path.join(os.homedir(), ".dts", "typescript-installs");
 
 export async function installAll() {
-    for (const v of TypeScriptVersion.all) {
-        // manually instead typescript@next outside the loop
-        if (v === TypeScriptVersion.all[TypeScriptVersion.all.length - 1]) { continue; }
+    for (const v of TypeScriptVersion.supported) {
+        // manually install typescript@next outside the loop
+        if (v === TypeScriptVersion.supported[TypeScriptVersion.supported.length - 1]) { continue; }
         await install(v);
     }
     await installNext();

src/lint.ts

@@ -185,7 +185,7 @@ function range(minVersion: TsVersion, maxVersion: TsVersion): ReadonlyArray<TsVe
 
     // The last item of TypeScriptVersion is the unreleased version of Typescript,
     // which is called 'next' on npm, so replace it with 'next'.
-    const allReleased: TsVersion[] = [...TypeScriptVersion.all];
+    const allReleased: TsVersion[] = [...TypeScriptVersion.supported];
     allReleased[allReleased.length - 1] = "next";
     const minIdx = allReleased.indexOf(minVersion);
     assert(minIdx >= 0);