diff --git a/eslint-suppressions.json b/eslint-suppressions.json
index 4f253484..086779e5 100644
--- a/eslint-suppressions.json
+++ b/eslint-suppressions.json
@@ -10,12 +10,6 @@
     }
   },
   "src/autocomplete/powershell.ts": {
-    "@typescript-eslint/consistent-indexed-object-style": {
-      "count": 1
-    },
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 1
-    },
     "@typescript-eslint/no-loop-func": {
       "count": 1
     },
@@ -28,9 +22,6 @@
     "@typescript-eslint/prefer-nullish-coalescing": {
       "count": 1
     },
-    "@typescript-eslint/prefer-readonly": {
-      "count": 2
-    },
     "unicorn/consistent-class-member-order": {
       "count": 1
     },
@@ -43,35 +34,14 @@
     "unicorn/no-break-in-nested-loop": {
       "count": 1
     },
-    "unicorn/no-negated-array-predicate": {
-      "count": 1
-    },
-    "unicorn/prefer-array-from-map": {
-      "count": 1
-    },
-    "unicorn/prefer-continue": {
-      "count": 2
-    },
     "unicorn/prefer-simple-sort-comparator": {
       "count": 1
     }
   },
   "src/autocomplete/zsh.ts": {
-    "@typescript-eslint/array-type": {
-      "count": 4
-    },
-    "@typescript-eslint/consistent-indexed-object-style": {
-      "count": 1
-    },
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 1
-    },
     "@typescript-eslint/no-loop-func": {
       "count": 1
     },
-    "@typescript-eslint/prefer-readonly": {
-      "count": 2
-    },
     "require-unicode-regexp": {
       "count": 2
     },
@@ -87,14 +57,8 @@
     "unicorn/no-duplicate-loops": {
       "count": 4
     },
-    "unicorn/no-negated-array-predicate": {
-      "count": 2
-    },
     "unicorn/prefer-simple-sort-comparator": {
       "count": 1
-    },
-    "unicorn/prefer-split-limit": {
-      "count": 1
     }
   },
   "src/base.ts": {
@@ -110,20 +74,14 @@
       "count": 2
     },
     "@typescript-eslint/no-unsafe-member-access": {
-      "count": 13
+      "count": 12
     },
     "@typescript-eslint/prefer-nullish-coalescing": {
       "count": 5
     },
-    "@typescript-eslint/prefer-optional-chain": {
-      "count": 1
-    },
     "require-unicode-regexp": {
       "count": 2
     },
-    "unicorn/consistent-boolean-name": {
-      "count": 2
-    },
     "unicorn/consistent-class-member-order": {
       "count": 1
     },
@@ -138,18 +96,9 @@
     },
     "unicorn/prefer-simple-condition-first": {
       "count": 2
-    },
-    "unicorn/prefer-split-limit": {
-      "count": 1
     }
   },
   "src/commands/autocomplete/index.ts": {
-    "@stylistic/lines-between-class-members": {
-      "count": 2
-    },
-    "@typescript-eslint/no-unnecessary-template-expression": {
-      "count": 1
-    },
     "@typescript-eslint/switch-exhaustiveness-check": {
       "count": 1
     },
@@ -157,33 +106,17 @@
       "count": 1
     }
   },
-  "src/commands/autocomplete/script.ts": {
-    "@stylistic/lines-between-class-members": {
-      "count": 1
-    }
-  },
-  "src/hooks/refresh-cache.ts": {
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 1
-    }
-  },
   "src/index.ts": {
     "import-x/no-anonymous-default-export": {
       "count": 1
     }
   },
   "test/autocomplete/bash.test.ts": {
-    "@typescript-eslint/consistent-indexed-object-style": {
+    "@typescript-eslint/class-literal-property-style": {
       "count": 1
     },
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 2
-    },
     "@typescript-eslint/no-empty-function": {
-      "count": 1
-    },
-    "@typescript-eslint/no-unnecessary-template-expression": {
-      "count": 6
+      "count": 2
     },
     "@typescript-eslint/no-unsafe-assignment": {
       "count": 1
@@ -191,34 +124,19 @@
     "@typescript-eslint/no-unsafe-call": {
       "count": 2
     },
-    "@typescript-eslint/promise-function-async": {
+    "@typescript-eslint/no-unused-private-class-members": {
       "count": 1
     },
-    "import-x/no-named-default": {
-      "count": 1
-    },
-    "unicorn/consistent-template-literal-escape": {
-      "count": 6
-    },
-    "unicorn/no-named-default": {
-      "count": 1
-    },
-    "unicorn/prefer-private-class-fields": {
+    "unicorn/consistent-class-member-order": {
       "count": 1
     }
   },
   "test/autocomplete/powershell.test.ts": {
-    "@typescript-eslint/consistent-indexed-object-style": {
+    "@typescript-eslint/class-literal-property-style": {
       "count": 1
     },
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 2
-    },
     "@typescript-eslint/no-empty-function": {
-      "count": 1
-    },
-    "@typescript-eslint/no-unnecessary-type-assertion": {
-      "count": 3
+      "count": 2
     },
     "@typescript-eslint/no-unsafe-assignment": {
       "count": 1
@@ -226,25 +144,19 @@
     "@typescript-eslint/no-unsafe-call": {
       "count": 2
     },
-    "@typescript-eslint/promise-function-async": {
+    "@typescript-eslint/no-unused-private-class-members": {
       "count": 1
     },
-    "unicorn/prefer-private-class-fields": {
+    "unicorn/consistent-class-member-order": {
       "count": 1
     }
   },
   "test/autocomplete/zsh.test.ts": {
-    "@typescript-eslint/consistent-indexed-object-style": {
+    "@typescript-eslint/class-literal-property-style": {
       "count": 1
     },
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 2
-    },
     "@typescript-eslint/no-empty-function": {
-      "count": 1
-    },
-    "@typescript-eslint/no-unnecessary-type-assertion": {
-      "count": 3
+      "count": 2
     },
     "@typescript-eslint/no-unsafe-assignment": {
       "count": 1
@@ -252,16 +164,10 @@
     "@typescript-eslint/no-unsafe-call": {
       "count": 2
     },
-    "@typescript-eslint/promise-function-async": {
-      "count": 1
-    },
-    "import-x/no-named-default": {
-      "count": 1
-    },
-    "unicorn/no-named-default": {
+    "@typescript-eslint/no-unused-private-class-members": {
       "count": 1
     },
-    "unicorn/prefer-private-class-fields": {
+    "unicorn/consistent-class-member-order": {
       "count": 1
     }
   },
@@ -269,15 +175,9 @@
     "@eslint-community/eslint-comments/require-description": {
       "count": 1
     },
-    "@typescript-eslint/consistent-type-imports": {
-      "count": 1
-    },
     "@typescript-eslint/no-shadow": {
       "count": 1
     },
-    "@typescript-eslint/no-unnecessary-template-expression": {
-      "count": 1
-    },
     "@typescript-eslint/no-unsafe-assignment": {
       "count": 1
     },
@@ -290,36 +190,11 @@
     "@typescript-eslint/no-unsafe-return": {
       "count": 1
     },
-    "@typescript-eslint/promise-function-async": {
-      "count": 2
-    },
-    "import-x/no-named-default": {
-      "count": 1
-    },
     "unicorn/max-nested-calls": {
       "count": 2
     },
     "unicorn/no-incorrect-template-string-interpolation": {
       "count": 1
-    },
-    "unicorn/no-named-default": {
-      "count": 1
-    }
-  },
-  "test/commands/autocomplete/index.test.ts": {
-    "import-x/no-named-default": {
-      "count": 1
-    },
-    "unicorn/no-named-default": {
-      "count": 1
-    }
-  },
-  "test/commands/autocomplete/script.test.ts": {
-    "import-x/no-named-default": {
-      "count": 1
-    },
-    "unicorn/no-named-default": {
-      "count": 1
     }
   },
   "test/helpers/runtest.ts": {
@@ -330,4 +205,4 @@
       "count": 1
     }
   }
-}
\ No newline at end of file
+}
diff --git a/src/autocomplete/powershell.ts b/src/autocomplete/powershell.ts
index 46b8b582..269ab050 100644
--- a/src/autocomplete/powershell.ts
+++ b/src/autocomplete/powershell.ts
@@ -1,4 +1,4 @@
-import {Command, Config, Interfaces} from '@oclif/core'
+import {type Command, type Config, type Interfaces} from '@oclif/core'
 import * as ejs from 'ejs'
 import {EOL} from 'node:os'
 import {format} from 'node:util'
@@ -9,9 +9,7 @@ type CommandCompletion = {
   summary: string
 }
 
-type CommandFlags = {
-  [name: string]: Command.Flag.Cached
-}
+type CommandFlags = Record<string, Command.Flag.Cached>
 
 type Topic = {
   description: string
@@ -21,8 +19,8 @@ type Topic = {
 export default class PowerShellComp {
   protected config: Config
   private _coTopics?: string[]
-  private commands: CommandCompletion[]
-  private topics: Topic[]
+  private readonly commands: CommandCompletion[]
+  private readonly topics: Topic[]
 
   constructor(config: Config) {
     this.config = config
@@ -100,29 +98,33 @@ export default class PowerShellComp {
 
     // Collect top-level topics and generate a cmd tree node for each one of them.
     for (const t of this.topics) {
-      if (!t.name.includes(':')) {
-        commandTree[t.name] = this.coTopics.includes(t.name)
-          ? {
-              ...genNode(t.name),
-            }
-          : {
-              _summary: t.description,
-              ...genNode(t.name),
-            }
-
-        topLevelArgs.push(t.name)
+      if (t.name.includes(':')) {
+        continue
       }
+
+      commandTree[t.name] = this.coTopics.includes(t.name)
+        ? {
+            ...genNode(t.name),
+          }
+        : {
+            _summary: t.description,
+            ...genNode(t.name),
+          }
+
+      topLevelArgs.push(t.name)
     }
 
     // Collect top-level commands and add a cmd tree node with the command ID.
     for (const c of this.commands) {
-      if (!c.id.includes(':') && !this.coTopics.includes(c.id)) {
-        commandTree[c.id] = {
-          _command: c.id,
-        }
+      if (c.id.includes(':') || this.coTopics.includes(c.id)) {
+        continue
+      }
 
-        topLevelArgs.push(c.id)
+      commandTree[c.id] = {
+        _command: c.id,
       }
+
+      topLevelArgs.push(c.id)
     }
 
     const hashtables: string[] = []
@@ -325,11 +327,7 @@ ${flaghHashtables.join('\n')}
 
       const newKeys = nodeKeys.filter((k) => k !== '_summary')
       if (newKeys.length > 0) {
-        const childNodes: string[] = []
-
-        for (const newKey of newKeys) {
-          childNodes.push(this.genHashtable(newKey, node[key]))
-        }
+        const childNodes: string[] = Array.from(newKeys, (newKey) => this.genHashtable(newKey, node[key]))
 
         childTpl = format(childTpl, childNodes.join('\n'))
 
@@ -396,7 +394,7 @@ ${flaghHashtables.join('\n')}
           // but aliases aren't guaranteed to follow the plugin command tree
           // so we need to add any missing topic between the starting point and the alias.
           for (let i = 0; i < split.length - 1; i++) {
-            if (!this.topics.some((t) => t.name === topic)) {
+            if (this.topics.every((t) => t.name !== topic)) {
               this.topics.push({
                 description: `${topic.replaceAll(':', ' ')} commands`,
                 name: topic,
diff --git a/src/autocomplete/zsh.ts b/src/autocomplete/zsh.ts
index 115dca9f..72b84759 100644
--- a/src/autocomplete/zsh.ts
+++ b/src/autocomplete/zsh.ts
@@ -1,4 +1,4 @@
-import {Command, Config, Interfaces} from '@oclif/core'
+import {type Command, type Config, type Interfaces} from '@oclif/core'
 import * as ejs from 'ejs'
 import {format} from 'node:util'
 
@@ -10,9 +10,7 @@ type CommandCompletion = {
   summary: string
 }
 
-type CommandFlags = {
-  [name: string]: Command.Flag.Cached
-}
+type CommandFlags = Record<string, Command.Flag.Cached>
 
 type Topic = {
   description: string
@@ -22,8 +20,8 @@ type Topic = {
 export default class ZshCompWithSpaces {
   protected config: Config
   private _coTopics?: string[]
-  private commands: CommandCompletion[]
-  private topics: Topic[]
+  private readonly commands: CommandCompletion[]
+  private readonly topics: Topic[]
 
   constructor(config: Config) {
     this.config = config
@@ -50,7 +48,7 @@ export default class ZshCompWithSpaces {
   }
 
   public generate(): string {
-    const firstArgs: {id: string; summary?: string}[] = []
+    const firstArgs: Array<{id: string; summary?: string}> = []
 
     for (const t of this.topics) {
       if (!t.name.includes(':'))
@@ -61,7 +59,7 @@ export default class ZshCompWithSpaces {
     }
 
     for (const c of this.commands) {
-      if (!firstArgs.some((a) => a.id === c.id) && !c.id.includes(':'))
+      if (firstArgs.every((a) => a.id !== c.id) && !c.id.includes(':'))
         firstArgs.push({
           id: c.id,
           summary: c.summary,
@@ -240,7 +238,7 @@ _${this.config.bin}
   esac
 }
 `
-      const subArgs: {id: string; summary?: string}[] = []
+      const subArgs: Array<{id: string; summary?: string}> = []
 
       let argsBlock = ''
 
@@ -274,7 +272,7 @@ _${this.config.bin}
 
     let argsBlock = ''
 
-    const subArgs: {id: string; summary?: string}[] = []
+    const subArgs: Array<{id: string; summary?: string}> = []
     for (const t of this.topics.filter((t) => t.name.startsWith(id + ':') && t.name.split(':').length === depth + 1)) {
       const subArg = t.name.split(':')[depth]
 
@@ -319,7 +317,7 @@ _${this.config.bin}
     return format(topicCompFunc, this.genZshValuesBlock(subArgs), argsBlock)
   }
 
-  private genZshValuesBlock(subArgs: {id: string; summary?: string}[]): string {
+  private genZshValuesBlock(subArgs: Array<{id: string; summary?: string}>): string {
     let valuesBlock = '_values "completions" \\\n'
 
     for (const subArg of subArgs) {
@@ -360,7 +358,7 @@ _${this.config.bin}
           // but aliases aren't guaranteed to follow the plugin command tree
           // so we need to add any missing topic between the starting point and the alias.
           for (let i = 0; i < split.length - 1; i++) {
-            if (!this.topics.some((t) => t.name === topic)) {
+            if (this.topics.every((t) => t.name !== topic)) {
               this.topics.push({
                 description: `${topic.replaceAll(':', ' ')} commands`,
                 name: topic,
@@ -418,6 +416,6 @@ _${this.config.bin}
       .replaceAll(/(["`])/g, '\\\\\\$1') // backticks and double-quotes require triple-backslashes
 
       .replaceAll(/([[\]])/g, '\\\\$1') // square brackets require double-backslashes
-      .split('\n')[0] // only use the first line
+      .split('\n', 1)[0] // only use the first line
   }
 }
diff --git a/src/commands/autocomplete/create.ts b/src/commands/autocomplete/create.ts
index a815f9cb..5baf2ff8 100644
--- a/src/commands/autocomplete/create.ts
+++ b/src/commands/autocomplete/create.ts
@@ -25,7 +25,7 @@ function sanitizeDescription(description?: string): string {
     .replaceAll(/(["`])/g, '\\\\\\$1') // backticks and double-quotes require triple-backslashes
 
     .replaceAll(/([[\]])/g, '\\\\$1') // square brackets require double-backslashes
-    .split('\n')[0] // only use the first line
+    .split('\n', 1)[0] // only use the first line
 }
 
 export default class Create extends AutocompleteBase {
@@ -44,19 +44,17 @@ export default class Create extends AutocompleteBase {
 
   private get bashCompletionFunction(): string {
     const {cliBin} = this
-    const supportSpaces = this.config.topicSeparator === ' '
+    const isSupportSpaces = this.config.topicSeparator === ' '
     const bashScript =
-      process.env.OCLIF_AUTOCOMPLETE_TOPIC_SEPARATOR === 'colon' || !supportSpaces
+      process.env.OCLIF_AUTOCOMPLETE_TOPIC_SEPARATOR === 'colon' || !isSupportSpaces
         ? bashAutocomplete
         : bashAutocompleteWithSpaces
-    return (
-      bashScript
-        .concat(
-          ...(this.config.binAliases?.map((alias) => `complete -F _<CLI_BIN>_autocomplete ${alias}`).join('\n') ?? []),
-        )
-        .replaceAll('<CLI_BIN>', cliBin)
-        .replaceAll('<BASH_COMMANDS_WITH_FLAGS_LIST>', this.bashCommandsWithFlagsList)
-    )
+    return bashScript
+      .concat(
+        ...(this.config.binAliases?.map((alias) => `complete -F _<CLI_BIN>_autocomplete ${alias}`).join('\n') ?? []),
+      )
+      .replaceAll('<CLI_BIN>', cliBin)
+      .replaceAll('<BASH_COMMANDS_WITH_FLAGS_LIST>', this.bashCommandsWithFlagsList)
   }
 
   private get bashCompletionFunctionPath(): string {
@@ -230,7 +228,7 @@ compinit;\n`
 
   private async createFiles() {
     // zsh
-    const supportSpaces = this.config.topicSeparator === ' '
+    const isSupportSpaces = this.config.topicSeparator === ' '
 
     await Promise.all(
       [
@@ -239,7 +237,7 @@ compinit;\n`
         writeFile(this.zshSetupScriptPath, this.zshSetupScript),
         // eslint-disable-next-line unicorn/prefer-spread
       ].concat(
-        process.env.OCLIF_AUTOCOMPLETE_TOPIC_SEPARATOR === 'colon' || !supportSpaces
+        process.env.OCLIF_AUTOCOMPLETE_TOPIC_SEPARATOR === 'colon' || !isSupportSpaces
           ? [writeFile(this.zshCompletionFunctionPath, this.zshCompletionFunction)]
           : [
               writeFile(this.zshCompletionFunctionPath, new ZshCompWithSpaces(this.config).generate()),
@@ -271,7 +269,7 @@ compinit;\n`
     return Object.keys(Klass.flags || {})
       .filter((flag) => Klass.flags && !Klass.flags[flag].hidden)
       .map((flag) => {
-        const f = (Klass.flags && Klass.flags[flag]) || {description: ''}
+        const f = Klass.flags?.[flag] || {description: ''}
         const isBoolean = f.type === 'boolean'
         const isOption = f.type === 'option'
         const name = isBoolean ? flag : `${flag}=-`
diff --git a/src/commands/autocomplete/index.ts b/src/commands/autocomplete/index.ts
index 3d3a7a9d..db140664 100644
--- a/src/commands/autocomplete/index.ts
+++ b/src/commands/autocomplete/index.ts
@@ -13,6 +13,7 @@ export default class Index extends AutocompleteBase {
       required: false,
     }),
   }
+
   static description = 'Display autocomplete installation instructions.'
   static examples = [
     '$ <%= config.bin %> autocomplete',
@@ -21,6 +22,7 @@ export default class Index extends AutocompleteBase {
     '$ <%= config.bin %> autocomplete powershell',
     '$ <%= config.bin %> autocomplete --refresh-cache',
   ]
+
   static flags = {
     'refresh-cache': Flags.boolean({char: 'r', description: 'Refresh cache (ignores displaying instructions)'}),
   }
@@ -35,7 +37,7 @@ export default class Index extends AutocompleteBase {
       )
     }
 
-    ux.action.start(`${bold('Building the autocomplete cache')}`)
+    ux.action.start(bold('Building the autocomplete cache'))
     await Create.run([], this.config)
     ux.action.stop()
 
diff --git a/src/commands/autocomplete/script.ts b/src/commands/autocomplete/script.ts
index 284dbfba..68675dab 100644
--- a/src/commands/autocomplete/script.ts
+++ b/src/commands/autocomplete/script.ts
@@ -11,6 +11,7 @@ export default class Script extends AutocompleteBase {
       required: false,
     }),
   }
+
   static description = 'outputs autocomplete config script for shells'
   static hidden = true
 
diff --git a/src/hooks/refresh-cache.ts b/src/hooks/refresh-cache.ts
index f4f2f45e..725376d0 100644
--- a/src/hooks/refresh-cache.ts
+++ b/src/hooks/refresh-cache.ts
@@ -1,4 +1,4 @@
-import {Hook} from '@oclif/core'
+import {type Hook} from '@oclif/core'
 
 const hook: Hook<'refresh'> = async function (opts) {
   // this `config` instance already have installed/uninstalled plugins loaded
diff --git a/test/autocomplete/bash.test.ts b/test/autocomplete/bash.test.ts
index 7c93b680..98709e4d 100644
--- a/test/autocomplete/bash.test.ts
+++ b/test/autocomplete/bash.test.ts
@@ -1,30 +1,28 @@
-import {Command, Config} from '@oclif/core'
-import {Plugin as IPlugin} from '@oclif/core/interfaces'
+import {type Command, Config} from '@oclif/core'
+import {type Plugin as IPlugin} from '@oclif/core/interfaces'
 import {expect} from 'chai'
 import path from 'node:path'
 import {fileURLToPath} from 'node:url'
 
 import Create from '../../src/commands/autocomplete/create.js'
 // autocomplete will throw error on windows ci
-import {default as skipWindows} from '../helpers/runtest.js'
+import skipWindows from '../helpers/runtest.js'
 
 class MyCommandClass implements Command.Cached {
   [key: string]: unknown
 
-  _base = ''
   aliases: string[] = []
-  args: {[name: string]: Command.Arg.Cached} = {}
+  args: Record<string, Command.Arg.Cached> = {}
   flags = {}
   hidden = false
   hiddenAliases!: string[]
   id = 'foo:bar'
+  readonly #base = ''
 
   new(): Command.Cached {
     // @ts-expect-error this is not the full interface but enough for testing
     return {
-      _run(): Promise<any> {
-        return Promise.resolve()
-      },
+      async _run(): Promise<any> {},
     }
   }
 
@@ -190,32 +188,32 @@ skipWindows('bash comp', () => {
 _test-cli_autocomplete()
 {
 
-  local cur="$\{COMP_WORDS[COMP_CWORD]}" opts IFS=$' \\t\\n'
+  local cur="\${COMP_WORDS[COMP_CWORD]}" opts IFS=$' \\t\\n'
   COMPREPLY=()
 
   local commands="
 autocomplete --refresh-cache
 deploy --api-version --ignore-errors --json --metadata
 deploy:functions --branch
-${'search '}
-${'app:execute:code '}
+search 
+app:execute:code 
 "
 
   if [[ "$cur" != "-"* ]]; then
     opts=$(printf "$commands" | grep -Eo '^[a-zA-Z0-9:_-]+')
   else
     local __COMP_WORDS
-    if [[ $\{COMP_WORDS[2]} == ":" ]]; then
+    if [[ \${COMP_WORDS[2]} == ":" ]]; then
       #subcommand
-      __COMP_WORDS=$(printf "%s" "$\{COMP_WORDS[@]:1:3}")
+      __COMP_WORDS=$(printf "%s" "\${COMP_WORDS[@]:1:3}")
     else
       #simple command
-      __COMP_WORDS="$\{COMP_WORDS[@]:1:1}"
+      __COMP_WORDS="\${COMP_WORDS[@]:1:1}"
     fi
-    opts=$(printf "$commands" | grep "$\{__COMP_WORDS}" | sed -n "s/^$\{__COMP_WORDS} //p")
+    opts=$(printf "$commands" | grep "\${__COMP_WORDS}" | sed -n "s/^\${__COMP_WORDS} //p")
   fi
   _get_comp_words_by_ref -n : cur
-  COMPREPLY=( $(compgen -W "$\{opts}" -- $\{cur}) )
+  COMPREPLY=( $(compgen -W "\${opts}" -- \${cur}) )
   __ltrim_colon_completions "$cur"
   return 0
 
@@ -234,32 +232,32 @@ complete -o default -F _test-cli_autocomplete test-cli`)
 _test-cli_autocomplete()
 {
 
-  local cur="$\{COMP_WORDS[COMP_CWORD]}" opts IFS=$' \\t\\n'
+  local cur="\${COMP_WORDS[COMP_CWORD]}" opts IFS=$' \\t\\n'
   COMPREPLY=()
 
   local commands="
 autocomplete --refresh-cache
 deploy --api-version --ignore-errors --json --metadata
 deploy:functions --branch
-${'search '}
-${'app:execute:code '}
+search 
+app:execute:code 
 "
 
   if [[ "$cur" != "-"* ]]; then
     opts=$(printf "$commands" | grep -Eo '^[a-zA-Z0-9:_-]+')
   else
     local __COMP_WORDS
-    if [[ $\{COMP_WORDS[2]} == ":" ]]; then
+    if [[ \${COMP_WORDS[2]} == ":" ]]; then
       #subcommand
-      __COMP_WORDS=$(printf "%s" "$\{COMP_WORDS[@]:1:3}")
+      __COMP_WORDS=$(printf "%s" "\${COMP_WORDS[@]:1:3}")
     else
       #simple command
-      __COMP_WORDS="$\{COMP_WORDS[@]:1:1}"
+      __COMP_WORDS="\${COMP_WORDS[@]:1:1}"
     fi
-    opts=$(printf "$commands" | grep "$\{__COMP_WORDS}" | sed -n "s/^$\{__COMP_WORDS} //p")
+    opts=$(printf "$commands" | grep "\${__COMP_WORDS}" | sed -n "s/^\${__COMP_WORDS} //p")
   fi
   _get_comp_words_by_ref -n : cur
-  COMPREPLY=( $(compgen -W "$\{opts}" -- $\{cur}) )
+  COMPREPLY=( $(compgen -W "\${opts}" -- \${cur}) )
   __ltrim_colon_completions "$cur"
   return 0
 
@@ -279,32 +277,32 @@ complete -F _test-cli_autocomplete alias`)
 _test-cli_autocomplete()
 {
 
-  local cur="$\{COMP_WORDS[COMP_CWORD]}" opts IFS=$' \\t\\n'
+  local cur="\${COMP_WORDS[COMP_CWORD]}" opts IFS=$' \\t\\n'
   COMPREPLY=()
 
   local commands="
 autocomplete --refresh-cache
 deploy --api-version --ignore-errors --json --metadata
 deploy:functions --branch
-${'search '}
-${'app:execute:code '}
+search 
+app:execute:code 
 "
 
   if [[ "$cur" != "-"* ]]; then
     opts=$(printf "$commands" | grep -Eo '^[a-zA-Z0-9:_-]+')
   else
     local __COMP_WORDS
-    if [[ $\{COMP_WORDS[2]} == ":" ]]; then
+    if [[ \${COMP_WORDS[2]} == ":" ]]; then
       #subcommand
-      __COMP_WORDS=$(printf "%s" "$\{COMP_WORDS[@]:1:3}")
+      __COMP_WORDS=$(printf "%s" "\${COMP_WORDS[@]:1:3}")
     else
       #simple command
-      __COMP_WORDS="$\{COMP_WORDS[@]:1:1}"
+      __COMP_WORDS="\${COMP_WORDS[@]:1:1}"
     fi
-    opts=$(printf "$commands" | grep "$\{__COMP_WORDS}" | sed -n "s/^$\{__COMP_WORDS} //p")
+    opts=$(printf "$commands" | grep "\${__COMP_WORDS}" | sed -n "s/^\${__COMP_WORDS} //p")
   fi
   _get_comp_words_by_ref -n : cur
-  COMPREPLY=( $(compgen -W "$\{opts}" -- $\{cur}) )
+  COMPREPLY=( $(compgen -W "\${opts}" -- \${cur}) )
   __ltrim_colon_completions "$cur"
   return 0
 
diff --git a/test/autocomplete/powershell.test.ts b/test/autocomplete/powershell.test.ts
index 25283d0e..d6e14c96 100644
--- a/test/autocomplete/powershell.test.ts
+++ b/test/autocomplete/powershell.test.ts
@@ -1,5 +1,5 @@
-import {Command, Config} from '@oclif/core'
-import {Deprecation, Plugin as IPlugin} from '@oclif/core/interfaces'
+import {type Command, Config} from '@oclif/core'
+import {type Deprecation, type Plugin as IPlugin} from '@oclif/core/interfaces'
 import {expect} from 'chai'
 import path from 'node:path'
 import {fileURLToPath} from 'node:url'
@@ -8,10 +8,9 @@ import PowerShellComp from '../../src/autocomplete/powershell.js'
 
 class MyCommandClass implements Command.Cached {
   [key: string]: unknown
-  _base = ''
   aliases: string[] = []
   aliasPermutations?: string[] | undefined
-  args: {[name: string]: Command.Arg.Cached} = {}
+  args: Record<string, Command.Arg.Cached> = {}
   deprecateAliases?: boolean | undefined
   deprecationOptions?: Deprecation | undefined
   description?: string | undefined
@@ -32,13 +31,12 @@ class MyCommandClass implements Command.Cached {
   summary?: string | undefined
   type?: string | undefined
   usage?: string | string[] | undefined
+  readonly #base = ''
 
   new(): Command.Cached {
     // @ts-expect-error this is not the full interface but enough for testing
     return {
-      _run(): Promise<any> {
-        return Promise.resolve()
-      },
+      async _run(): Promise<any> {},
     }
   }
 
@@ -196,7 +194,7 @@ describe('powershell completion', () => {
 
   it('generates a valid completion file.', () => {
     config.bin = 'test-cli'
-    const powerShellComp = new PowerShellComp(config as Config)
+    const powerShellComp = new PowerShellComp(config)
     expect(powerShellComp.generate()).to.equal(`
 using namespace System.Management.Automation
 using namespace System.Management.Automation.Language
@@ -389,7 +387,7 @@ Register-ArgumentCompleter -Native -CommandName test-cli -ScriptBlock $scriptblo
   it('generates a valid completion file with a bin alias.', () => {
     config.bin = 'test-cli'
     config.binAliases = ['test']
-    const powerShellComp = new PowerShellComp(config as Config)
+    const powerShellComp = new PowerShellComp(config)
     expect(powerShellComp.generate()).to.equal(`
 using namespace System.Management.Automation
 using namespace System.Management.Automation.Language
@@ -582,7 +580,7 @@ Register-ArgumentCompleter -Native -CommandName @("test","test-cli") -ScriptBloc
   it('generates a valid completion file with multiple bin aliases.', () => {
     config.bin = 'test-cli'
     config.binAliases = ['test', 'test1']
-    const powerShellComp = new PowerShellComp(config as Config)
+    const powerShellComp = new PowerShellComp(config)
     expect(powerShellComp.generate()).to.equal(`
 using namespace System.Management.Automation
 using namespace System.Management.Automation.Language
diff --git a/test/autocomplete/zsh.test.ts b/test/autocomplete/zsh.test.ts
index df92261a..bcd3c579 100644
--- a/test/autocomplete/zsh.test.ts
+++ b/test/autocomplete/zsh.test.ts
@@ -1,19 +1,18 @@
-import {Command, Config} from '@oclif/core'
-import {Deprecation, Plugin as IPlugin} from '@oclif/core/interfaces'
+import {type Command, Config} from '@oclif/core'
+import {type Deprecation, type Plugin as IPlugin} from '@oclif/core/interfaces'
 import {expect} from 'chai'
 import path from 'node:path'
 import {fileURLToPath} from 'node:url'
 
 import ZshCompWithSpaces from '../../src/autocomplete/zsh.js'
 // autocomplete will throw error on windows ci
-import {default as skipWindows} from '../helpers/runtest.js'
+import skipWindows from '../helpers/runtest.js'
 
 class MyCommandClass implements Command.Cached {
   [key: string]: unknown
-  _base = ''
   aliases: string[] = []
   aliasPermutations?: string[] | undefined
-  args: {[name: string]: Command.Arg.Cached} = {}
+  args: Record<string, Command.Arg.Cached> = {}
   deprecateAliases?: boolean | undefined
   deprecationOptions?: Deprecation | undefined
   description?: string | undefined
@@ -34,13 +33,12 @@ class MyCommandClass implements Command.Cached {
   summary?: string | undefined
   type?: string | undefined
   usage?: string | string[] | undefined
+  readonly #base = ''
 
   new(): Command.Cached {
     // @ts-expect-error this is not the full interface but enough for testing
     return {
-      _run(): Promise<any> {
-        return Promise.resolve()
-      },
+      async _run(): Promise<any> {},
     }
   }
 
@@ -202,7 +200,7 @@ skipWindows('zsh comp', () => {
 
     it('generates a valid completion file.', () => {
       config.bin = 'test-cli'
-      const zshCompWithSpaces = new ZshCompWithSpaces(config as Config)
+      const zshCompWithSpaces = new ZshCompWithSpaces(config)
       expect(zshCompWithSpaces.generate()).to.equal(`#compdef test-cli
 
 
@@ -336,7 +334,7 @@ _test-cli
     it('generates a valid completion file with a bin alias.', () => {
       config.bin = 'test-cli'
       config.binAliases = ['testing']
-      const zshCompWithSpaces = new ZshCompWithSpaces(config as Config)
+      const zshCompWithSpaces = new ZshCompWithSpaces(config)
       expect(zshCompWithSpaces.generate()).to.equal(`#compdef test-cli
 compdef testing=test-cli
 
@@ -470,7 +468,7 @@ _test-cli
     it('generates a valid completion file with multiple bin aliases.', () => {
       config.bin = 'test-cli'
       config.binAliases = ['testing', 'testing2']
-      const zshCompWithSpaces = new ZshCompWithSpaces(config as Config)
+      const zshCompWithSpaces = new ZshCompWithSpaces(config)
       expect(zshCompWithSpaces.generate()).to.equal(`#compdef test-cli
 compdef testing=test-cli
 compdef testing2=test-cli
diff --git a/test/commands/autocomplete/create.test.ts b/test/commands/autocomplete/create.test.ts
index c4455ce3..1b904d85 100644
--- a/test/commands/autocomplete/create.test.ts
+++ b/test/commands/autocomplete/create.test.ts
@@ -1,4 +1,4 @@
-import {Config, Interfaces, Plugin} from '@oclif/core'
+import {Config, type Interfaces, Plugin} from '@oclif/core'
 import {expect} from 'chai'
 import {readFile} from 'node:fs/promises'
 import path from 'node:path'
@@ -6,7 +6,7 @@ import {fileURLToPath} from 'node:url'
 
 import Create from '../../../src/commands/autocomplete/create.js'
 // autocomplete will throw error on windows ci
-import {default as skipWindows} from '../../helpers/runtest.js'
+import skipWindows from '../../helpers/runtest.js'
 
 const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../package.json')
 const config = new Config({root})
@@ -27,7 +27,7 @@ skipWindows('Create', () => {
       cmd = new Create([], config)
       plugin = new Plugin({root})
       cmd.config.plugins = [plugin]
-      plugin._manifest = () =>
+      plugin._manifest = async () =>
         readJson(path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../test.oclif.manifest.json'))
       await plugin.load()
     })
@@ -114,7 +114,7 @@ complete -o default -F _oclif-example_autocomplete oclif-example\n`)
       const spacedCmd: any = new Create([], spacedConfig)
       const spacedPlugin: any = new Plugin({root})
       spacedCmd.config.plugins = [spacedPlugin]
-      spacedPlugin._manifest = () =>
+      spacedPlugin._manifest = async () =>
         readJson(path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../test.oclif.manifest.json'))
       await spacedPlugin.load()
 
@@ -181,7 +181,7 @@ foo --bar --baz --dangerous --brackets --double-quotes --multi-line --json
 
       opts=$(printf "%s " "\${commands[@]}") # | grep -Eo '^[a-zA-Z0-9_-]+'
     fi
-  ${'else '}
+  else 
     # Flag
 
     # The full CLI command separated by colons (e.g. "mycli command subcommand --fl" -> "command:subcommand")
diff --git a/test/commands/autocomplete/index.test.ts b/test/commands/autocomplete/index.test.ts
index a172a221..94938d91 100644
--- a/test/commands/autocomplete/index.test.ts
+++ b/test/commands/autocomplete/index.test.ts
@@ -2,7 +2,7 @@ import {runCommand} from '@oclif/test'
 import {expect} from 'chai'
 
 // autocomplete will throw error on windows ci
-import {default as skipWindows} from '../../helpers/runtest.js'
+import skipWindows from '../../helpers/runtest.js'
 
 skipWindows('autocomplete index', () => {
   it('provides bash instructions', async () => {
diff --git a/test/commands/autocomplete/script.test.ts b/test/commands/autocomplete/script.test.ts
index 5dfeab8c..7c1cdae5 100644
--- a/test/commands/autocomplete/script.test.ts
+++ b/test/commands/autocomplete/script.test.ts
@@ -3,7 +3,7 @@ import {runCommand} from '@oclif/test'
 import {expect} from 'chai'
 
 // autocomplete will throw error on windows ci
-import {default as skipWindows} from '../../helpers/runtest.js'
+import skipWindows from '../../helpers/runtest.js'
 
 skipWindows('autocomplete:script', () => {
   it('provides bash profile config', async () => {