fix: 100% coverage in tests (#4607)

* fix: 100% coverage in tests

 * Removed dead code in `lib/utils/usage.js`.
 * Removed dead code in `lib/base-command.js`.
 * Removed "load-all" test, we currently have 100% coverage and new PRs
   without tests will be rejected if they don't add coverage for new
   files.
 * Removed `check-coverage` script as a separate command.
 * Removed separate coverage test in ci.yml.
 * Removed `coverage` flag from tap config, the default is already to
   enforce 100% coverage.

Removed a tiny bit of dead code resulting from this

* fix: clean up usage output

Removed usage lib, rolled logic into base-command.js
Cleaned up usage output to be less redundant

1 files changed, 14 insertions, 4 deletions

diff --git a/scripts/config-doc-command.js b/scripts/config-doc-command.js
index af008b7e1..efc831561 100644
--- a/scripts/config-doc-command.js
+++ b/scripts/config-doc-command.js
@@ -1,5 +1,5 @@
 const { definitions } = require('../lib/utils/config/index.js')
-const usageFn = require('../lib/utils/usage.js')
+const cmdAliases = require('../lib/utils/cmd-list').aliases
 const { writeFileSync, readFileSync } = require('fs')
 const { resolve } = require('path')
 
@@ -52,9 +52,19 @@ const describeUsage = ({ usage }) => {
         synopsis.push(usage.map(usageInfo => `${baseCommand} ${usageInfo}`).join('\n'))
       }
 
-      const aliases = usageFn(commandName, '').trim()
-      if (aliases) {
-        synopsis.push(`\n${aliases}`)
+      const aliases = Object.keys(cmdAliases).reduce((p, c) => {
+        if (cmdAliases[c] === commandName) {
+          p.push(c)
+        }
+        return p
+      }, [])
+
+      if (aliases.length === 1) {
+        synopsis.push('')
+        synopsis.push(`alias: ${aliases[0]}`)
+      } else if (aliases.length > 1) {
+        synopsis.push('')
+        synopsis.push(`aliases: ${aliases.join(', ')}`)
       }
     }
   } else {