From 32981ebd3a7490b93e8c57abe01b44fba5583929 Mon Sep 17 00:00:00 2001
From: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
Date: Wed, 13 May 2020 15:54:06 -0700
Subject: [PATCH 1/2] Add 3.9 to shipped versions, remove 2.9 from supported
 versions

---
 packages/header-parser/test/index.test.ts | 12 ++++-----
 packages/typescript-versions/src/index.ts | 32 +++++++++++------------
 2 files changed, 21 insertions(+), 23 deletions(-)

diff --git a/packages/header-parser/test/index.test.ts b/packages/header-parser/test/index.test.ts
index 2b5384fc79..d573fc6088 100644
--- a/packages/header-parser/test/index.test.ts
+++ b/packages/header-parser/test/index.test.ts
@@ -131,11 +131,11 @@ describe("isSupported", () => {
   it("works", () => {
     expect(TypeScriptVersion.isSupported("3.7")).toBeTruthy();
   });
-  it("supports 2.9", () => {
-    expect(TypeScriptVersion.isSupported("2.9")).toBeTruthy();
+  it("supports 3.0", () => {
+    expect(TypeScriptVersion.isSupported("3.0")).toBeTruthy();
   });
-  it("does not support 2.8", () => {
-    expect(!TypeScriptVersion.isSupported("2.8")).toBeTruthy();
+  it("does not support 2.9", () => {
+    expect(!TypeScriptVersion.isSupported("2.9")).toBeTruthy();
   });
 });
 
@@ -177,8 +177,8 @@ describe("tagsToUpdate", () => {
       "latest"
     ]);
   });
-  it("allows 2.9 onwards", () => {
-    expect(TypeScriptVersion.tagsToUpdate("2.9")).toEqual(
+  it("allows 3.0 onwards", () => {
+    expect(TypeScriptVersion.tagsToUpdate("3.0")).toEqual(
       TypeScriptVersion.supported.map(s => "ts" + s).concat("latest")
     );
   });
diff --git a/packages/typescript-versions/src/index.ts b/packages/typescript-versions/src/index.ts
index 3a02c76cd2..fedc4da02d 100644
--- a/packages/typescript-versions/src/index.ts
+++ b/packages/typescript-versions/src/index.ts
@@ -27,31 +27,28 @@ import assert from "assert";
 */
 
 /** Parseable but unsupported TypeScript versions. */
-export type UnsupportedTypeScriptVersion = "2.0" | "2.1" | "2.2" | "2.3" | "2.4" | "2.5" | "2.6" | "2.7" | "2.8";
+export type UnsupportedTypeScriptVersion =
+  | "2.0"
+  | "2.1"
+  | "2.2"
+  | "2.3"
+  | "2.4"
+  | "2.5"
+  | "2.6"
+  | "2.7"
+  | "2.8"
+  | "2.9";
 /**
  * Parseable and supported TypeScript versions.
  * Only add to this list if we will support this version on DefinitelyTyped.
  */
-export type TypeScriptVersion =
-  | "2.9"
-  | "3.0"
-  | "3.1"
-  | "3.2"
-  | "3.3"
-  | "3.4"
-  | "3.5"
-  | "3.6"
-  | "3.7"
-  | "3.8"
-  | "3.9"
-  | "4.0";
+export type TypeScriptVersion = "3.0" | "3.1" | "3.2" | "3.3" | "3.4" | "3.5" | "3.6" | "3.7" | "3.8" | "3.9" | "4.0";
 
 export type AllTypeScriptVersion = UnsupportedTypeScriptVersion | TypeScriptVersion;
 
 export namespace TypeScriptVersion {
   /** Add to this list when a version actual ships.  */
   export const shipped: readonly TypeScriptVersion[] = [
-    "2.9",
     "3.0",
     "3.1",
     "3.2",
@@ -60,10 +57,11 @@ export namespace TypeScriptVersion {
     "3.5",
     "3.6",
     "3.7",
-    "3.8"
+    "3.8",
+    "3.9"
   ];
   /** Add to this list when a version is available as typescript@next */
-  export const supported: readonly TypeScriptVersion[] = [...shipped, "3.9", "4.0"];
+  export const supported: readonly TypeScriptVersion[] = [...shipped, "4.0"];
   /** Add to this list when it will no longer be supported on Definitely Typed */
   export const unsupported: readonly UnsupportedTypeScriptVersion[] = [
     "2.0",

From 2942b76bf1ca4879bea34c9f662ff7c61a627b7e Mon Sep 17 00:00:00 2001
From: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
Date: Wed, 13 May 2020 16:02:19 -0700
Subject: [PATCH 2/2] Update header-parser too

---
 packages/header-parser/src/index.ts       | 2 +-
 packages/header-parser/test/index.test.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/header-parser/src/index.ts b/packages/header-parser/src/index.ts
index b0f9cffd5b..d18be35105 100644
--- a/packages/header-parser/src/index.ts
+++ b/packages/header-parser/src/index.ts
@@ -231,7 +231,7 @@ const typeScriptVersionLineParser: pm.Parser<AllTypeScriptVersion> = pm
 const typeScriptVersionParser: pm.Parser<AllTypeScriptVersion> = pm
   .regexp(/\r?\n/)
   .then(typeScriptVersionLineParser)
-  .fallback<TypeScriptVersion>("2.9");
+  .fallback<TypeScriptVersion>("3.0");
 
 export function parseTypeScriptVersionLine(line: string): AllTypeScriptVersion {
   const result = typeScriptVersionLineParser.parse(line);
diff --git a/packages/header-parser/test/index.test.ts b/packages/header-parser/test/index.test.ts
index d573fc6088..501a19cbe4 100644
--- a/packages/header-parser/test/index.test.ts
+++ b/packages/header-parser/test/index.test.ts
@@ -40,7 +40,7 @@ describe("parse", () => {
       libraryName: "foo",
       libraryMajorVersion: 1,
       libraryMinorVersion: 2,
-      typeScriptVersion: "2.9",
+      typeScriptVersion: "3.0",
       nonNpm: false,
       projects: ["https://github.com/foo/foo", "https://foo.com"],
       contributors: [
@@ -65,7 +65,7 @@ describe("parse", () => {
       libraryName: "foo",
       libraryMajorVersion: 1,
       libraryMinorVersion: 2,
-      typeScriptVersion: "2.9",
+      typeScriptVersion: "3.0",
       nonNpm: false,
       projects: ["https://github.com/foo/foo", "https://foo.com"],
       contributors: [