Update TS versions; removing 4.8, shipping 5.6, supporting 5.8 (#1100)

Author: jakebailey

.changeset/sweet-crews-impress.md

@@ -0,0 +1,6 @@
+---
+"@definitelytyped/typescript-packages": patch
+"@definitelytyped/typescript-versions": patch
+---
+
+Update TS versions; removing 4.8, shipping 5.6, supporting 5.8

packages/publisher/test/generate-packages.test.ts

@@ -169,7 +169,7 @@ testo({
         "@types/express": "*"
     },
     "typesPublisherContentHash": "53300522250468c4161b10d962cac2d9d8f2cfee1b3dfef4b749a7c3ec839275",
-    "typeScriptVersion": "4.8"
+    "typeScriptVersion": "4.9"
 }`);
   },
   basicNotNeededPackageJson() {

packages/typescript-packages/package.json

@@ -22,7 +22,6 @@
   },
   "dependencies": {
     "@definitelytyped/typescript-versions": "workspace:*",
-    "typescript-4.8": "npm:typescript@~4.8.0-0",
     "typescript-4.9": "npm:typescript@~4.9.0-0",
     "typescript-5.0": "npm:typescript@~5.0.0-0",
     "typescript-5.1": "npm:typescript@~5.1.0-0",
@@ -31,6 +30,7 @@
     "typescript-5.4": "npm:typescript@~5.4.0-0",
     "typescript-5.5": "npm:typescript@~5.5.0-0",
     "typescript-5.6": "npm:typescript@~5.6.0-0",
-    "typescript-5.7": "npm:typescript@~5.7.0-0"
+    "typescript-5.7": "npm:typescript@~5.7.0-0",
+    "typescript-5.8": "npm:typescript@~5.8.0-0"
   }
 }

packages/typescript-versions/src/index.ts

@@ -41,9 +41,9 @@ export type AllTypeScriptVersion = UnsupportedTypeScriptVersion | TypeScriptVers
 
 export namespace TypeScriptVersion {
   /** Add to this list when a version actually ships.  */
-  export const shipped = ["4.8", "4.9", "5.0", "5.1", "5.2", "5.3", "5.4", "5.5"] as const;
+  export const shipped = ["4.9", "5.0", "5.1", "5.2", "5.3", "5.4", "5.5", "5.6"] as const;
   /** Add to this list when a version is available as typescript@next */
-  export const supported = [...shipped, "5.6", "5.7"] as const;
+  export const supported = [...shipped, "5.7", "5.8"] as const;
   /** Add to this list when it will no longer be supported on Definitely Typed */
   export const unsupported = [
     "2.0",
@@ -74,6 +74,7 @@ export namespace TypeScriptVersion {
     "4.5",
     "4.6",
     "4.7",
+    "4.8",
   ] as const;
   export const all: readonly AllTypeScriptVersion[] = [...unsupported, ...supported];
   export const lowest = supported[0];

packages/typescript-versions/test/index.test.ts

@@ -18,13 +18,13 @@ describe("all", () => {
 
 describe("isSupported", () => {
   it("works", () => {
-    expect(TypeScriptVersion.isSupported("5.1")).toBeTruthy();
+    expect(TypeScriptVersion.isSupported("5.6")).toBeTruthy();
   });
-  it("supports 4.8", () => {
-    expect(TypeScriptVersion.isSupported("4.8")).toBeTruthy();
+  it("supports 4.9", () => {
+    expect(TypeScriptVersion.isSupported("4.9")).toBeTruthy();
   });
-  it("does not support 4.7", () => {
-    expect(!TypeScriptVersion.isSupported("4.7")).toBeTruthy();
+  it("does not support 4.8", () => {
+    expect(!TypeScriptVersion.isSupported("4.8")).toBeTruthy();
   });
 });
 
@@ -42,10 +42,10 @@ describe("isTypeScriptVersion", () => {
 
 describe("range", () => {
   it("works", () => {
-    expect(TypeScriptVersion.range("4.9")).toEqual(["4.9", "5.0", "5.1", "5.2", "5.3", "5.4", "5.5", "5.6", "5.7"]);
+    expect(TypeScriptVersion.range("5.0")).toEqual(["5.0", "5.1", "5.2", "5.3", "5.4", "5.5", "5.6", "5.7", "5.8"]);
   });
-  it("includes 4.8 onwards", () => {
-    expect(TypeScriptVersion.range("4.8")).toEqual(TypeScriptVersion.supported);
+  it("includes 4.9 onwards", () => {
+    expect(TypeScriptVersion.range("4.9")).toEqual(TypeScriptVersion.supported);
   });
 });
 
@@ -60,11 +60,12 @@ describe("tagsToUpdate", () => {
       "ts5.5",
       "ts5.6",
       "ts5.7",
+      "ts5.8",
       "latest",
     ]);
   });
-  it("allows 4.8 onwards", () => {
-    expect(TypeScriptVersion.tagsToUpdate("4.8")).toEqual(
+  it("allows 4.9 onwards", () => {
+    expect(TypeScriptVersion.tagsToUpdate("4.9")).toEqual(
       TypeScriptVersion.supported.map((s) => "ts" + s).concat("latest"),
     );
   });