voidzero-guard · Oct 25, 2026
diff --git a/packages/cli/binding/index.d.cts b/packages/cli/binding/index.d.cts
@@ -1669,6 +1669,15 @@ export interface TypeScriptOptions {
   rewriteImportExtensions?: 'rewrite' | 'remove' | boolean;
 }
 
+/**
+ * The selected tsconfig and its original source, sent to an asynchronous loader.
+ * `None` selects discovery explicitly, without consulting the receiving thread's env.
+ */
+export interface FrozenTsconfig {
+  path?: string;
+  source?: string;
+}
+
 export interface LoadContext {
   /** Export conditions of the relevant `package.json` */
   conditions?: Array<string>;

diff --git a/packages/cli/src/define-config.ts b/packages/cli/src/define-config.ts
@@ -432,7 +432,7 @@ export function computeAutoInlineList(
   existingInline: (string | RegExp)[] | true | undefined,
   projectRoot: string,
   _createRequire: (from: string) => { resolve: (id: string) => string } = createRequire,
-  installedPackages = new Map<string, boolean>(),
+  installedPackages: Map<string, boolean> = new Map<string, boolean>(),
 ): (string | RegExp)[] | null {
   // User opted into "inline everything" — don't touch.
   if (existingInline === true) {

diff --git a/packages/cli/src/oxlint-plugin.ts b/packages/cli/src/oxlint-plugin.ts
@@ -2,7 +2,7 @@ import fs from 'node:fs';
 import path from 'node:path';
 
 import { definePlugin, defineRule } from '@oxlint/plugins';
-import type { Context, ESTree } from '@oxlint/plugins';
+import type { Context, ESTree, Plugin, Rule } from '@oxlint/plugins';
 
 import cliPackage from '../package.json' with { type: 'json' };
 import {
@@ -362,7 +362,7 @@ function reportLegacyOxlintPluginApiImport(
   reportSpecifier(context, literal, VITE_PLUS_LINT_PLUGINS);
 }
 
-export const preferVitePlusImportsRule = defineRule({
+export const preferVitePlusImportsRule: Rule = defineRule({
   meta: {
     type: 'problem',
     docs: {
@@ -435,7 +435,7 @@ export const preferVitePlusImportsRule = defineRule({
   },
 });
 
-const plugin = definePlugin({
+const plugin: Plugin = definePlugin({
   meta: {
     name: VITE_PLUS_OXLINT_PLUGIN_NAME,
   },

diff --git a/packages/cli/src/version.ts b/packages/cli/src/version.ts
@@ -81,7 +81,7 @@ async function resolveToolVersions(localPackagePath: string): Promise<Record<str
 /**
  * Print version information
  */
-export async function printVersion(cwd: string) {
+export async function printVersion(cwd: string): Promise<void> {
   const globalVersion = getGlobalVersion();
   const cliVersion = getCliVersion();
   const localMetadata = getLocalMetadata(cwd);

diff --git a/packages/cli/tsdown.config.ts b/packages/cli/tsdown.config.ts
@@ -99,7 +99,12 @@ export default defineConfig([
     format: 'esm',
     fixedExtension: false,
     shims: true,
-    dts: true,
+    dts: {
+      // TypeScript 7 no longer ships the classic tsc API and its tsgo API
+      // requires 7.1+, so rolldown-plugin-dts cannot use either here. Generate
+      // declarations with Oxc instead.
+      generator: 'oxc',
+    },
     clean: true,
     // NAPI binding uses a relative path that tsdown can't auto-detect from package.json
     deps: { neverBundle: [/\.\.\/binding\/index\.(js|cjs)/] },

diff --git a/packages/core/package.json b/packages/core/package.json
@@ -147,7 +147,6 @@
   "peerDependencies": {
     "@arethetypeswrong/core": "^0.18.1",
     "@types/node": "^20.19.0 || >=22.12.0",
-    "@typescript/native-preview": "*",
     "@vitejs/devtools": "^0.7.1 || ^0.8.0",
     "@volar/typescript": "~2.4.0",
     "@vue/language-core": "~3.2.0 || ~3.3.0",
@@ -168,9 +167,6 @@
     "yaml": "^2.4.2"
   },
   "peerDependenciesMeta": {
-    "@typescript/native-preview": {
-      "optional": true
-    },
     "@volar/typescript": {
       "optional": true
     },
@@ -241,6 +237,6 @@
   "bundledVersions": {
     "vite": "8.3.5",
     "rolldown": "1.2.15",
-    "tsdown": "0.23.1"
+    "tsdown": "0.23.2"
   }
 }
diff --git a/packages/prompts/src/box.ts b/packages/prompts/src/box.ts
@@ -64,7 +64,7 @@ function getPaddingForLine(
 
 const defaultFormatBorder = color.gray;
 
-export const box = (message = '', title = '', opts?: BoxOptions) => {
+export const box = (message = '', title = '', opts?: BoxOptions): void => {
   const output: Writable = opts?.output ?? process.stdout;
   const columns = getColumns(output);
   const borderWidth = 1;

diff --git a/packages/prompts/src/common.ts b/packages/prompts/src/common.ts
@@ -14,7 +14,7 @@ export const wrapTextWithPrefix = (
   output: Writable | undefined,
   text: string,
   prefix: string,
-  startPrefix = prefix,
+  startPrefix: string = prefix,
 ): string => {
   const width = Math.max(
     1,
@@ -58,8 +58,8 @@ export const optionText = (
     .join('\n');
 };
 
-export const SELECT_INSTRUCTIONS = ['↑/↓ navigate', 'Enter confirm'];
-export const MULTISELECT_INSTRUCTIONS = ['↑/↓ navigate', 'Space select', 'Enter confirm'];
+export const SELECT_INSTRUCTIONS: string[] = ['↑/↓ navigate', 'Enter confirm'];
+export const MULTISELECT_INSTRUCTIONS: string[] = ['↑/↓ navigate', 'Space select', 'Enter confirm'];
 export const formatInstructionFooter = (
   instructions: string[],
   hasGuide: boolean,
@@ -71,47 +71,47 @@ export const formatInstructionFooter = (
     hasGuide ? `${color.blue(S_BAR)} ` : '  ',
   ).split('\n');
 
-export const unicode = isUnicodeSupported();
+export const unicode: boolean = isUnicodeSupported();
 export const isCI = (): boolean => process.env.CI === 'true';
 export const isTTY = (output: Writable): boolean => {
   return (output as Writable & { isTTY?: boolean }).isTTY === true;
 };
-export const unicodeOr = (c: string, fallback: string) => (unicode ? c : fallback);
-export const S_POINTER_ACTIVE = unicodeOr('›', '>');
+export const unicodeOr = (c: string, fallback: string): string => (unicode ? c : fallback);
+export const S_POINTER_ACTIVE: string = unicodeOr('›', '>');
 export const S_POINTER_INACTIVE = ' ';
-export const S_STEP_ACTIVE = S_POINTER_ACTIVE;
-export const S_STEP_CANCEL = unicodeOr('■', 'x');
-export const S_STEP_ERROR = unicodeOr('▲', 'x');
-export const S_STEP_SUBMIT = unicodeOr('◇', 'o');
-
-export const S_BAR_START = unicodeOr('┌', 'T');
-export const S_BAR = unicodeOr('│', '|');
-export const S_BAR_END = unicodeOr('└', '—');
-export const S_BAR_START_RIGHT = unicodeOr('┐', 'T');
-export const S_BAR_END_RIGHT = unicodeOr('┘', '—');
-
-export const S_RADIO_ACTIVE = S_POINTER_ACTIVE;
-export const S_RADIO_INACTIVE = S_POINTER_INACTIVE;
-export const S_CHECKBOX_ACTIVE = unicodeOr('◻', '[•]');
-export const S_CHECKBOX_SELECTED = unicodeOr('◼', '[+]');
-export const S_CHECKBOX_INACTIVE = unicodeOr('◻', '[ ]');
-export const S_PASSWORD_MASK = unicodeOr('▪', '•');
-
-export const S_BAR_H = unicodeOr('─', '-');
-export const S_CORNER_TOP_RIGHT = unicodeOr('╮', '+');
-export const S_CONNECT_LEFT = unicodeOr('├', '+');
-export const S_CORNER_BOTTOM_RIGHT = unicodeOr('╯', '+');
-export const S_CORNER_BOTTOM_LEFT = unicodeOr('╰', '+');
-export const S_CORNER_TOP_LEFT = unicodeOr('╭', '+');
-
-export const S_INFO = unicodeOr('●', '•');
-export const S_SUCCESS = unicodeOr('◆', '*');
-export const S_WARN = unicodeOr('▲', '!');
-export const S_ERROR = unicodeOr('■', 'x');
-
-export const completeColor = (value: string) => color.gray(value);
-
-export const symbol = (state: State) => {
+export const S_STEP_ACTIVE: string = S_POINTER_ACTIVE;
+export const S_STEP_CANCEL: string = unicodeOr('■', 'x');
+export const S_STEP_ERROR: string = unicodeOr('▲', 'x');
+export const S_STEP_SUBMIT: string = unicodeOr('◇', 'o');
+
+export const S_BAR_START: string = unicodeOr('┌', 'T');
+export const S_BAR: string = unicodeOr('│', '|');
+export const S_BAR_END: string = unicodeOr('└', '—');
+export const S_BAR_START_RIGHT: string = unicodeOr('┐', 'T');
+export const S_BAR_END_RIGHT: string = unicodeOr('┘', '—');
+
+export const S_RADIO_ACTIVE: string = S_POINTER_ACTIVE;
+export const S_RADIO_INACTIVE: string = S_POINTER_INACTIVE;
+export const S_CHECKBOX_ACTIVE: string = unicodeOr('◻', '[•]');
+export const S_CHECKBOX_SELECTED: string = unicodeOr('◼', '[+]');
+export const S_CHECKBOX_INACTIVE: string = unicodeOr('◻', '[ ]');
+export const S_PASSWORD_MASK: string = unicodeOr('▪', '•');
+
+export const S_BAR_H: string = unicodeOr('─', '-');
+export const S_CORNER_TOP_RIGHT: string = unicodeOr('╮', '+');
+export const S_CONNECT_LEFT: string = unicodeOr('├', '+');
+export const S_CORNER_BOTTOM_RIGHT: string = unicodeOr('╯', '+');
+export const S_CORNER_BOTTOM_LEFT: string = unicodeOr('╰', '+');
+export const S_CORNER_TOP_LEFT: string = unicodeOr('╭', '+');
+
+export const S_INFO: string = unicodeOr('●', '•');
+export const S_SUCCESS: string = unicodeOr('◆', '*');
+export const S_WARN: string = unicodeOr('▲', '!');
+export const S_ERROR: string = unicodeOr('■', 'x');
+
+export const completeColor = (value: string): string => color.gray(value);
+
+export const symbol = (state: State): string => {
   switch (state) {
     case 'initial':
     case 'active':
@@ -129,7 +129,7 @@ export const symbol = (state: State) => {
   }
 };
 
-export const symbolBar = (state: State) => {
+export const symbolBar = (state: State): string => {
   switch (state) {
     case 'initial':
     case 'active':

diff --git a/packages/prompts/src/log.ts b/packages/prompts/src/log.ts
@@ -29,7 +29,7 @@ export const log = {
       spacing = 0,
       withGuide,
     }: LogMessageOptions = {},
-  ) => {
+  ): void => {
     const parts: string[] = [];
     const hasGuide = getGuide({ withGuide });
     const spacingString = !hasGuide ? '' : secondarySymbol;
@@ -59,23 +59,23 @@ export const log = {
     }
     output.write(`${parts.join('\n')}\n`);
   },
-  info: (message: string, opts?: LogMessageOptions) => {
+  info: (message: string, opts?: LogMessageOptions): void => {
     log.message(message, { ...opts, symbol: color.blue(S_INFO) });
   },
-  success: (message: string, opts?: LogMessageOptions) => {
+  success: (message: string, opts?: LogMessageOptions): void => {
     log.message(message, { ...opts, symbol: completeColor(S_SUCCESS) });
   },
-  step: (message: string, opts?: LogMessageOptions) => {
+  step: (message: string, opts?: LogMessageOptions): void => {
     log.message(message, { ...opts, symbol: completeColor(S_STEP_SUBMIT) });
   },
-  warn: (message: string, opts?: LogMessageOptions) => {
+  warn: (message: string, opts?: LogMessageOptions): void => {
     log.message(message, { ...opts, symbol: color.yellow(S_WARN) });
   },
   /** alias for `log.warn()`. */
-  warning: (message: string, opts?: LogMessageOptions) => {
+  warning: (message: string, opts?: LogMessageOptions): void => {
     log.warn(message, opts);
   },
-  error: (message: string, opts?: LogMessageOptions) => {
+  error: (message: string, opts?: LogMessageOptions): void => {
     log.message(message, { ...opts, symbol: color.red(S_ERROR) });
   },
 };
diff --git a/packages/prompts/src/messages.ts b/packages/prompts/src/messages.ts
@@ -4,19 +4,19 @@ import color from 'picocolors';
 
 import { type CommonOptions, getGuide, S_BAR, S_BAR_START, S_BAR_END } from './common.js';
 
-export const cancel = (message = '', opts?: CommonOptions) => {
+export const cancel = (message = '', opts?: CommonOptions): void => {
   const output: Writable = opts?.output ?? process.stdout;
   const prefix = getGuide(opts) ? `${color.gray(S_BAR_END)} ` : '';
   output.write(`${prefix}${color.red(message)}\n\n`);
 };
 
-export const intro = (title = '', opts?: CommonOptions) => {
+export const intro = (title = '', opts?: CommonOptions): void => {
   const output: Writable = opts?.output ?? process.stdout;
   const prefix = getGuide(opts) ? `${color.gray(S_BAR_START)} ` : '';
   output.write(`${prefix}${title}\n\n`);
 };
 
-export const outro = (message = '', opts?: CommonOptions) => {
+export const outro = (message = '', opts?: CommonOptions): void => {
   const output: Writable = opts?.output ?? process.stdout;
   const prefix = getGuide(opts) ? `${color.gray(S_BAR)}\n${color.gray(S_BAR_END)} ` : '';
   output.write(`${prefix}${message}\n\n`);

diff --git a/packages/prompts/src/note.ts b/packages/prompts/src/note.ts
@@ -9,7 +9,7 @@ export interface NoteOptions extends CommonOptions {
 }
 
 /** A compact, enclosed note. Guide bars never replace its side borders. */
-export const note = (message = '', title = '', opts?: NoteOptions) => {
+export const note = (message = '', title = '', opts?: NoteOptions): void => {
   const content = opts?.format ? message.split('\n').map(opts.format).join('\n') : message;
   box(`\n${content}\n`, title, { ...opts, width: 'auto', rounded: true, formatBorder: color.gray });
 };
diff --git a/packages/prompts/src/stream.ts b/packages/prompts/src/stream.ts
@@ -16,7 +16,7 @@ export const stream = {
   message: async (
     iterable: Iterable<string> | AsyncIterable<string>,
     { symbol = '' }: LogMessageOptions = {},
-  ) => {
+  ): Promise<void> => {
     process.stdout.write(symbol ? `${symbol} ` : '');
     const initialWidth = symbol ? 2 : 0;
     let lineWidth = initialWidth;
@@ -36,23 +36,23 @@ export const stream = {
     }
     process.stdout.write('\n');
   },
-  info: (iterable: Iterable<string> | AsyncIterable<string>) => {
+  info: (iterable: Iterable<string> | AsyncIterable<string>): Promise<void> => {
     return stream.message(iterable, { symbol: color.blue(S_INFO) });
   },
-  success: (iterable: Iterable<string> | AsyncIterable<string>) => {
+  success: (iterable: Iterable<string> | AsyncIterable<string>): Promise<void> => {
     return stream.message(iterable, { symbol: completeColor(S_SUCCESS) });
   },
-  step: (iterable: Iterable<string> | AsyncIterable<string>) => {
+  step: (iterable: Iterable<string> | AsyncIterable<string>): Promise<void> => {
     return stream.message(iterable, { symbol: completeColor(S_STEP_SUBMIT) });
   },
-  warn: (iterable: Iterable<string> | AsyncIterable<string>) => {
+  warn: (iterable: Iterable<string> | AsyncIterable<string>): Promise<void> => {
     return stream.message(iterable, { symbol: color.yellow(S_WARN) });
   },
   /** alias for `log.warn()`. */
-  warning: (iterable: Iterable<string> | AsyncIterable<string>) => {
+  warning: (iterable: Iterable<string> | AsyncIterable<string>): Promise<void> => {
     return stream.warn(iterable);
   },
-  error: (iterable: Iterable<string> | AsyncIterable<string>) => {
+  error: (iterable: Iterable<string> | AsyncIterable<string>): Promise<void> => {
     return stream.message(iterable, { symbol: color.red(S_ERROR) });
   },
 };
diff --git a/packages/prompts/src/task-log.ts b/packages/prompts/src/task-log.ts
@@ -31,6 +31,19 @@ export interface TaskLogCompletionOptions {
   showLog?: boolean;
 }
 
+export interface TaskLogGroup {
+  message(msg: string, mopts?: TaskLogMessageOptions): void;
+  error(message: string): void;
+  success(message: string): void;
+}
+
+export interface TaskLog {
+  message(msg: string, mopts?: TaskLogMessageOptions): void;
+  group(name: string): TaskLogGroup;
+  error(message: string, opts?: TaskLogCompletionOptions): void;
+  success(message: string, opts?: TaskLogCompletionOptions): void;
+}
+
 interface BufferEntry {
   header?: string;
   value: string;
@@ -49,7 +62,7 @@ const stripDestructiveANSI = (input: string): string => {
 /**
  * Renders a log which clears on success and remains on failure
  */
-export const taskLog = (opts: TaskLogOptions) => {
+export const taskLog = (opts: TaskLogOptions): TaskLog => {
   const output: Writable = opts.output ?? process.stdout;
   const columns = getColumns(output);
   const secondarySymbol = color.gray(S_BAR);

diff --git a/packages/prompts/src/task.ts b/packages/prompts/src/task.ts
@@ -20,7 +20,7 @@ export type Task = {
 /**
  * Define a group of tasks to be executed
  */
-export const tasks = async (tasks: Task[], opts?: CommonOptions) => {
+export const tasks = async (tasks: Task[], opts?: CommonOptions): Promise<void> => {
   for (const task of tasks) {
     if (task.enabled === false) {
       continue;

diff --git a/packages/prompts/tsdown.config.ts b/packages/prompts/tsdown.config.ts
@@ -4,4 +4,10 @@ export default defineConfig({
   deps: {
     onlyBundle: false,
   },
+  dts: {
+    // TypeScript 7 no longer ships the classic tsc API and its tsgo API
+    // requires 7.1+, so rolldown-plugin-dts cannot use either here. Generate
+    // declarations with Oxc instead.
+    generator: 'oxc',
+  },
 });
diff --git a/packages/tools/.upstream-versions.json b/packages/tools/.upstream-versions.json
@@ -12,6 +12,6 @@
   "oxc-node": {
     "repo": "https://github.com/oxc-project/oxc-node.git",
     "branch": "main",
-    "hash": "4759cedbda87f67ca646d3277166884cfcd62f81"
+    "hash": "6d5376df15df5446a91d01d53f3d7965d8b9708e"
   }
 }