feat: simplify CI color detection (may fallback to 16 colors or b&w in rare CI environments)

Author: webdiscus

.editorconfig

@@ -4,6 +4,9 @@ root = true
 end_of_line = lf
 insert_final_newline = true
 trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+tab_width = 2
 
 [{*.cjs,*.js}]
 indent_size = 2
@@ -15,3 +18,6 @@ tab_width = 2
 
 [{LICENSE,*.json,*.md}]
 insert_final_newline = false
+
+[{package.npm.json,dist/**}]
+indent_style = tab

.prettierrc

@@ -17,6 +17,15 @@
       "options": {
         "tabWidth": 4
       }
+    },
+    {
+      "files": [
+        "dist/**/*.*",
+        "package.npm.json"
+      ],
+      "options": {
+        "useTabs": true
+      }
     }
   ]
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ansis",
-  "version": "4.0.0-rc.7",
+  "version": "4.0.0-rc.8",
   "description": "A small and fast library for applying ANSI colors in terminal or browser console",
   "keywords": [
     "ansi",

package.npm.json

@@ -1,18 +1,18 @@
 {
 "name":"ansis",
-"version":"4.0.0-rc.7",
+"version":"4.0.0-rc.8",
 "description":"ANSI color lib",
 "keywords":["ansi","colors","cli"],
 "license":"ISC",
 "author":"webdiscus",
 "repository":"webdiscus/ansis",
-"type": "module",
+"type":"module",
 "exports":{
- ".":{
-  "types":"./index.d.ts",
-  "require":"./index.cjs",
-  "import":"./index.mjs"
- }
+	".":{
+		"types":"./index.d.ts",
+		"require":"./index.cjs",
+		"import":"./index.mjs"
+	}
 },
 "sideEffects":false,
 "engines":{"node":">=14"}

src/color-support.js

@@ -45,22 +45,15 @@ let autoDetectLevel = (env, isTTY, isWin) => {
   // 2) Detect color support in CI.
   // Note: CI environments are not TTY and often advertise themselves as `dumb` terminals.
 
-  // Azure DevOps CI
-  // https://learn.microsoft.com/en-us/azure/devops/pipelines/build/variables?view=azure-devops&tabs=yaml
-  if (!!env.TF_BUILD) return LEVEL_16COLORS;
-
-  // JetBrains TeamCity support 256 colors since 2020.1.1 (2020-06-23), TEAMCITY_VERSION in env
-  if (/,TEAMCI/.test(envKeys)) return LEVEL_256COLORS;
-
   // CI tools
   // https://github.com/watson/ci-info/blob/master/vendors.json
   if (!!env.CI) {
-    // CI supports truecolor: GITHUB_ACTIONS, GITEA_ACTIONS
-    if (/,GIT(HUB|EA)/.test(envKeys)) return LEVEL_TRUECOLOR;
+    // CI supports truecolor: GITHUB_ACTIONS
+    if (/,GITHUB/.test(envKeys)) return LEVEL_TRUECOLOR;
 
     // others CI supports only 16 colors, e.g. when env contains:
     // - CI_NAME === codeship | sourcehut
-    // - GITLAB_CI | TRAVIS | CIRCLECI |APPVEYOR | BUILDKITE | DRONE
+    // - GITLAB_CI | CIRCLECI | TRAVIS | APPVEYOR | BUILDKITE | DRONE | BITBUCKET_BUILD_NUMBER | AZURE_HTTP_USER_AGENT
 
     return LEVEL_16COLORS;
   }
@@ -138,7 +131,8 @@ export const getLevel = (mockThis) => {
   }
 
   // PM2 does not set process.stdout.isTTY, but colors may be supported (depends on actual terminal)
-  let isPM2 = !!env.PM2_HOME && !!env.pm_id;
+  // PM2_HOME is always set by PM2, whether running in fork or cluster mode
+  let isPM2 = !!env.PM2_HOME;
 
   // when Next.JS runtime is `edge`, process.stdout is undefined, but colors output is supported
   // runtime values supported colors: `nodejs`, `edge`, `experimental-edge`

test/unit.test.js

@@ -226,30 +226,6 @@ describe('CI tools', () => {
     const expected = LEVEL_16COLORS;
     expect(expected).toEqual(received);
   });
-
-  test(`Azure CI`, () => {
-    const received = getLevel({
-      process: {
-        env: { TF_BUILD: true },
-        argv: [],
-      },
-
-    });
-    const expected = LEVEL_16COLORS;
-    expect(expected).toEqual(received);
-  });
-
-  test(`TeamCity`, () => {
-    const received = getLevel({
-      process: {
-        env: { TEAMCITY_VERSION: '2020.1.1' },
-        argv: [],
-      },
-
-    });
-    const expected = LEVEL_256COLORS;
-    expect(expected).toEqual(received);
-  });
 });
 
 describe('flags and options', () => {