refactor!: replace ansi-colors with smaller and faster ansis

lib/cli/cli.js

@@ -22,7 +22,7 @@ const {
 } = require('./options');
 const lookupFiles = require('./lookup-files');
 const commands = require('./commands');
-const ansi = require('ansi-colors');
+const {blue, magenta, red, yellow} = require('ansis');
 const {repository, homepage, version, discord} = require('../../package.json');
 const {cwd} = require('../utils');
 
@@ -62,7 +62,7 @@ exports.main = (argv = process.argv.slice(2), mochaArgs) => {
     .fail((msg, err, yargs) => {
       debug('caught error sometime before command handler: %O', err);
       yargs.showHelp();
-      console.error(`\n${symbols.error} ${ansi.red('ERROR:')} ${msg}`);
+      console.error(`\n${symbols.error} ${red`ERROR:`} ${msg}`);
       process.exitCode = 1;
     })
     .help('help', 'Show usage information & exit')
@@ -72,9 +72,9 @@ exports.main = (argv = process.argv.slice(2), mochaArgs) => {
     .wrap(process.stdout.columns ? Math.min(process.stdout.columns, 80) : 80)
     .epilog(
       `Mocha Resources
-    Chat: ${ansi.magenta(discord)}
-  GitHub: ${ansi.blue(repository.url)}
-    Docs: ${ansi.yellow(homepage)}
+    Chat: ${magenta(discord)}
+  GitHub: ${blue(repository.url)}
+    Docs: ${yellow(homepage)}
       `
     )
     .parserConfiguration(YARGS_PARSER_CONFIG)

lib/cli/collect-files.js

@@ -2,7 +2,7 @@
 
 const fs = require('fs');
 const path = require('path');
-const ansi = require('ansi-colors');
+const {red, yellow} = require('ansis');
 const debug = require('debug')('mocha:cli:run:helpers');
 const minimatch = require('minimatch');
 const {NO_FILES_MATCH_PATTERN} = require('../errors').constants;
@@ -94,12 +94,12 @@ module.exports = ({
             unmatchedSpecFiles[0].pattern
           )}` // stringify to print escaped characters raw
         : 'Error: No test files found';
-    console.error(ansi.red(noneFoundMsg));
+    console.error(red(noneFoundMsg));
     process.exit(1);
   } else {
     // print messages as a warning
     unmatchedSpecFiles.forEach(warning => {
-      console.warn(ansi.yellow(`Warning: ${warning.message}`));
+      console.warn(yellow`Warning: ${warning.message}`);
     });
   }
 

lib/cli/options.js

@@ -8,7 +8,7 @@
  */
 
 const fs = require('fs');
-const ansi = require('ansi-colors');
+const {red} = require('ansis');
 const yargsParser = require('yargs-parser');
 const {
   types,
@@ -180,7 +180,7 @@ const parse = (args = [], defaultValues = {}, ...configObjects) => {
     boolean: types.boolean.concat(nodeArgs.map(pair => pair[0]))
   });
   if (result.error) {
-    console.error(ansi.red(`Error: ${result.error.message}`));
+    console.error(red`Error: ${result.error.message}`);
     process.exit(1);
   }
 

lib/cli/run-helpers.js

@@ -9,7 +9,7 @@
 
 const fs = require('fs');
 const path = require('path');
-const ansi = require('ansi-colors');
+const {yellow} = require('ansis');
 const debug = require('debug')('mocha:cli:run:helpers');
 const {watchRun, watchParallelRun} = require('./watch-run');
 const collectFiles = require('./collect-files');
@@ -121,9 +121,7 @@ const handleUnmatchedFiles = (mocha, unmatchedFiles) => {
 
   unmatchedFiles.forEach(({pattern, absolutePath}) => {
     console.error(
-      ansi.yellow(
-        `Warning: Cannot find any files matching pattern "${pattern}" at the absolute path "${absolutePath}"`
-      )
+      yellow`Warning: Cannot find any files matching pattern "${pattern}" at the absolute path "${absolutePath}"`
     );
   });
   console.log(

lib/cli/run.js

@@ -8,7 +8,7 @@
  */
 
 const symbols = require('log-symbols');
-const ansi = require('ansi-colors');
+const {red} = require('ansis');
 const Mocha = require('../mocha');
 const {
   createUnsupportedError,
@@ -357,7 +357,7 @@ exports.builder = yargs =>
         Object.assign(argv, plugins);
       } catch (err) {
         // this could be a bad --require, bad reporter, ui, etc.
-        console.error(`\n${symbols.error} ${ansi.red('ERROR:')}`, err);
+        console.error(`\n${symbols.error} ${red`ERROR:`}`, err);
         yargs.exit(1);
       }
     })

package.json

@@ -94,7 +94,7 @@
     "version": "run-p version:* && git add -A ./AUTHORS ./CHANGELOG.md"
   },
   "dependencies": {
-    "ansi-colors": "^4.1.3",
+    "ansis": "3.4.0",
     "browser-stdout": "^1.3.1",
     "chokidar": "^3.5.3",
     "debug": "^4.3.5",