chore: support up to Deno LTS and refine supported Deno versions logic

.github/workflows/ci.yml

@@ -19,8 +19,8 @@ jobs:
       fail-fast: false
       matrix:
         deno:
-          - v1.x
-          - v2.x
+          - lts
+          - vx.x.x
           - canary
         os:
           - ubuntu-latest

README.md

@@ -5,6 +5,8 @@
 [![ci](https://github.com/denoland/std/actions/workflows/ci.yml/badge.svg)](https://github.com/denoland/std/actions/workflows/ci.yml)
 
 High-quality APIs for [Deno](https://deno.com/) and the web. Use fearlessly.
+Supports up to the
+[current Deno LTS version](https://docs.deno.com/runtime/fundamentals/stability_and_releases/#long-term-support-(lts)).
 
 > [!IMPORTANT]
 > Newer versions of the Standard Library are now hosted on

_tools/lint_plugin_test.ts

@@ -2,6 +2,7 @@
 // @ts-nocheck Deno.lint namespace does not pass type checking in Deno 1.x
 
 import { assertEquals } from "@std/assert/equals";
+import { IS_LINT_PLUGIN_SUPPORTED } from "../internal/support.ts";
 import lintPlugin from "./lint_plugin.ts";
 
 function assertLintPluginDiagnostics(
@@ -18,7 +19,7 @@ function assertLintPluginDiagnostics(
 }
 
 Deno.test("deno-style-guide/prefer-private-field", {
-  ignore: !Deno.version.deno.startsWith("2"),
+  ignore: !IS_LINT_PLUGIN_SUPPORTED,
 }, () => {
   // Good
   assertLintPluginDiagnostics(
@@ -57,7 +58,7 @@ class MyClass {
 });
 
 Deno.test("deno-style-guide/no-top-level-arrow-syntax", {
-  ignore: !Deno.version.deno.startsWith("2"),
+  ignore: !IS_LINT_PLUGIN_SUPPORTED,
 }, () => {
   // Bad
   assertLintPluginDiagnostics(
@@ -98,7 +99,7 @@ function foo() {
 });
 
 Deno.test("deno-style-guide/no-external-code", {
-  ignore: !Deno.version.deno.startsWith("2"),
+  ignore: !IS_LINT_PLUGIN_SUPPORTED,
 }, () => {
   // Good
   assertLintPluginDiagnostics('import { walk } from "@std/fs/walk";', []);
@@ -128,7 +129,7 @@ import { bad } from "jsr:@malicious-muffin/bad";
 });
 
 Deno.test("deno-style-guide/naming-convention", {
-  ignore: !Deno.version.deno.startsWith("2"),
+  ignore: !IS_LINT_PLUGIN_SUPPORTED,
 }, () => {
   // Good
   assertLintPluginDiagnostics(
@@ -243,7 +244,7 @@ enum enumName {
 });
 
 Deno.test("deno-style-guide/error-message", {
-  ignore: !Deno.version.deno.startsWith("2"),
+  ignore: !IS_LINT_PLUGIN_SUPPORTED,
 }, () => {
   // Good
   assertLintPluginDiagnostics(
@@ -312,7 +313,7 @@ new CustomError("Can't parse input");
 });
 
 Deno.test("deno-style-guide/exported-function-args-maximum", {
-  ignore: !Deno.version.deno.startsWith("2"),
+  ignore: !IS_LINT_PLUGIN_SUPPORTED,
 }, () => {
   // Good
   assertLintPluginDiagnostics(

dotenv/mod_test.ts

@@ -8,7 +8,7 @@ import {
 } from "@std/assert";
 import { load, type LoadOptions, loadSync } from "./mod.ts";
 import * as path from "@std/path";
-import { IS_DENO_2 } from "../internal/_is_deno_2.ts";
+import { IS_DENO_2 } from "../internal/support.ts";
 
 const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
 const testdataDir = path.resolve(moduleDir, "testdata");

fs/ensure_dir_test.ts

@@ -3,7 +3,7 @@ import { assertEquals, assertRejects, assertThrows } from "@std/assert";
 import * as path from "@std/path";
 import { ensureDir, ensureDirSync } from "./ensure_dir.ts";
 import { ensureFile, ensureFileSync } from "./ensure_file.ts";
-import { IS_DENO_2 } from "../internal/_is_deno_2.ts";
+import { IS_DENO_2 } from "../internal/support.ts";
 
 const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
 const testdataDir = path.resolve(moduleDir, "testdata", "ensure_dir");

fs/ensure_file_test.ts

@@ -2,7 +2,7 @@
 import { assertRejects, assertThrows } from "@std/assert";
 import * as path from "@std/path";
 import { ensureFile, ensureFileSync } from "./ensure_file.ts";
-import { IS_DENO_2 } from "../internal/_is_deno_2.ts";
+import { IS_DENO_2 } from "../internal/support.ts";
 
 const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
 const testdataDir = path.resolve(moduleDir, "testdata");

fs/ensure_symlink_test.ts

@@ -9,7 +9,7 @@ import {
 } from "@std/assert";
 import * as path from "@std/path";
 import { ensureSymlink, ensureSymlinkSync } from "./ensure_symlink.ts";
-import { IS_DENO_2 } from "../internal/_is_deno_2.ts";
+import { IS_DENO_2 } from "../internal/support.ts";
 
 const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
 const testdataDir = path.resolve(moduleDir, "testdata");

fs/expand_glob_test.ts

@@ -12,7 +12,7 @@ import {
   type ExpandGlobOptions,
   expandGlobSync,
 } from "./expand_glob.ts";
-import { IS_DENO_2 } from "../internal/_is_deno_2.ts";
+import { IS_DENO_2 } from "../internal/support.ts";
 
 async function expandGlobArray(
   globString: string,

fs/unstable_rename_test.ts

@@ -1,7 +1,6 @@
 // Copyright 2018-2025 the Deno authors. MIT license.
 
 import { assert, assertRejects, assertThrows } from "@std/assert";
-import { lessOrEqual, parse as parseSemver } from "@std/semver";
 import { rename, renameSync } from "./unstable_rename.ts";
 import { NotFound } from "./unstable_errors.js";
 import { mkdir, mkdtemp, open, rm, stat, symlink } from "node:fs/promises";
@@ -17,11 +16,11 @@ import {
   statSync,
   symlinkSync,
 } from "node:fs";
+import { isDenoVersionGreaterOrEqual } from "../internal/support.ts";
 
 // In Deno 2.2.2 or earlier, the `rename` function has an issue on Windows.
 const RENAME_HAS_ISSUE = Deno.version &&
-  parseSemver(Deno.version.deno).build?.length === 0 && // not canary
-  lessOrEqual(parseSemver(Deno.version.deno), parseSemver("2.2.2")) &&
+  !isDenoVersionGreaterOrEqual("2.2.3") &&
   platform() === "win32";
 
 /** Tests if the original file/directory is missing since the file is renamed.

http/file_server_test.ts

@@ -22,7 +22,7 @@ import denoConfig from "./deno.json" with { type: "json" };
 import { MINUTE } from "@std/datetime/constants";
 import { getAvailablePort } from "@std/net/get-available-port";
 import { concat } from "@std/bytes/concat";
-import { lessThan, parse as parseSemver } from "@std/semver";
+import { isDenoVersionGreaterOrEqual } from "../internal/support.ts";
 
 const moduleDir = dirname(fromFileUrl(import.meta.url));
 const testdataDir = resolve(moduleDir, "testdata");
@@ -33,11 +33,9 @@ const serveDirOptions: ServeDirOptions = {
   showDotfiles: true,
   enableCors: true,
 };
-const denoVersion = parseSemver(Deno.version.deno);
-const isCanary = denoVersion.build ? denoVersion.build.length > 0 : false;
 // FileInfo.mode is not available on Windows before Deno 2.1.0
 const fsModeUnavailable = Deno.build.os === "windows" &&
-  lessThan(denoVersion, parseSemver("2.1.0")) && !isCanary;
+  !isDenoVersionGreaterOrEqual("2.1.0");
 
 const TEST_FILE_PATH = join(testdataDir, "test_file.txt");
 const TEST_FILE_STAT = await Deno.stat(TEST_FILE_PATH);

internal/deno.json

@@ -9,6 +9,7 @@
     "./diff": "./diff.ts",
     "./format": "./format.ts",
     "./styles": "./styles.ts",
-    "./types": "./types.ts"
+    "./types": "./types.ts",
+    "./support": "./support.ts"
   }
 }

internal/mod.ts

@@ -1,5 +1,4 @@
 // Copyright 2018-2025 the Deno authors. MIT license.
-// This module is browser compatible.
 /**
  * Internal utilities for the public API of the Deno Standard Library.
  *
@@ -43,3 +42,4 @@ export * from "./diff_str.ts";
 export * from "./format.ts";
 export * from "./styles.ts";
 export * from "./types.ts";
+export * from "./support.ts";

internal/support.ts

@@ -0,0 +1,41 @@
+// Copyright 2018-2025 the Deno authors. MIT license.
+import { greaterOrEqual } from "../semver/greater_or_equal.ts";
+import { parse } from "../semver/parse.ts";
+
+/**
+ * Checks if the current Deno version is greater than or equal to the specified
+ * minimum version.
+ *
+ * @param minVersion Minimum version to check against.
+ * @returns `true` if the current Deno version is greater than or equal to the
+ * specified minimum version, `false` otherwise.
+ *
+ * @example Basic usage
+ * ```ts no-assert
+ * import { isDenoVersionGreaterOrEqual } from "@std/internal/support";
+ *
+ * if (isDenoVersionGreaterOrEqual("1.0.0")) {
+ *   console.log("Deno version is greater than or equal to 1.0.0");
+ * } else {
+ *   console.log("Deno version is less than 1.0.0");
+ * }
+ * ```
+ */
+export function isDenoVersionGreaterOrEqual(minVersion: string): boolean {
+  // deno-lint-ignore no-explicit-any
+  return (Deno.version as any) &&
+    greaterOrEqual(parse(Deno.version.deno), parse(minVersion));
+}
+
+/**
+ * Whether the current Deno version supports the
+ * {@link https://docs.deno.com/runtime/reference/lint_plugins/ | lint plugin API}.
+ */
+export const IS_LINT_PLUGIN_SUPPORTED: boolean = isDenoVersionGreaterOrEqual(
+  "2.2.0",
+);
+
+/**
+ * Whether the current Deno version is 2.0.0 or greater.
+ */
+export const IS_DENO_2: boolean = isDenoVersionGreaterOrEqual("2.0.0");

testing/_snapshot_utils.ts

@@ -99,6 +99,3 @@ export function getSnapshotNotMatchMessage(
     `Snapshot does not match:\n${diffMsg}\nTo update snapshots, run\n    deno test --allow-read --allow-write [files]... -- --update\n`;
   return getErrorMessage(message, options);
 }
-
-// TODO (WWRS): Remove this when we drop support for Deno 1.x
-export const LINT_SUPPORTED = !Deno.version.deno.startsWith("1.");

testing/unstable_snapshot.ts

@@ -9,9 +9,9 @@ import {
   getIsUpdate,
   getOptions,
   getSnapshotNotMatchMessage,
-  LINT_SUPPORTED,
   serialize,
 } from "./_snapshot_utils.ts";
+import { IS_LINT_PLUGIN_SUPPORTED } from "@std/internal/support";
 
 /**
  * The options for {@linkcode assertInlineSnapshot}.
@@ -95,7 +95,7 @@ const updateRequests: SnapshotUpdateRequest[] = [];
 function updateSnapshots() {
   if (updateRequests.length === 0) return;
 
-  if (!LINT_SUPPORTED) {
+  if (!IS_LINT_PLUGIN_SUPPORTED) {
     throw new Error(
       "Deno versions before 2.2.0 do not support Deno.lint, which is required to update inline snapshots",
     );

testing/unstable_snapshot_test.ts

@@ -6,7 +6,7 @@ import {
   assertInlineSnapshot,
   createAssertInlineSnapshot,
 } from "./unstable_snapshot.ts";
-import { LINT_SUPPORTED } from "./_snapshot_utils.ts";
+import { IS_LINT_PLUGIN_SUPPORTED } from "../internal/support.ts";
 
 const SNAPSHOT_MODULE_URL = toFileUrl(join(
   dirname(fromFileUrl(import.meta.url)),
@@ -80,7 +80,7 @@ Deno.test("assertInlineSnapshot()", () => {
 });
 
 Deno.test("assertInlineSnapshot() formats", async () => {
-  if (!LINT_SUPPORTED) return;
+  if (!IS_LINT_PLUGIN_SUPPORTED) return;
 
   const fileContents =
     `import { assertInlineSnapshot } from "${SNAPSHOT_MODULE_URL}";
@@ -143,7 +143,7 @@ Deno.test("format test", async () => {
 });
 
 Deno.test("assertInlineSnapshot() counts lines and columns like V8", async () => {
-  if (!LINT_SUPPORTED) return;
+  if (!IS_LINT_PLUGIN_SUPPORTED) return;
 
   const tempDir = await Deno.makeTempDir();
   const countTestFile = join(tempDir, "count_test.ts");