開発上のメモ（環境構築でハマったこと・実装アンチパターン、調査等）

DevTools listening on ws://127.0.0.1:36551/devtools/browser/db3972a0-fbb9-4e6a-9fe0-4692cf1abf05
[8956:0115/181526.210849:ERROR:object_proxy.cc(590)] Failed to call method: org.freedesktop.portal.Settings.Read: object_path= /org/freedesktop/portal/desktop: unknown error type:

node:internal/process/esm_loader:34
      internalBinding('errors').triggerUncaughtException(
                                ^
TypeError [Error]: value.replace is not a function
    at normalizeSlashes (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/util.js:62:18)
    at Object.getExtendsConfigPath (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/ts-internals.js:24:54)
    at readConfig (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/configuration.js:127:64)
    at findAndReadConfig (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/configuration.js:50:84)
    at create (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/index.js:146:69)
    at register (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/index.js:127:19)
    at Object.registerAndCreateEsmHooks (/home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/dist/esm.js:25:49)
    at file:///home/xxx/.cache/Cypress/13.6.2/Cypress/resources/app/node_modules/ts-node/esm/transpile-only.mjs:8:7
    at ModuleJob.run (node:internal/modules/esm/module_job:218:25)
    at async ModuleLoader.import (node:internal/modules/esm/loader:329:24)

Error: Webpack Compilation Error
Module not found: Error: Can't resolve 'process/browser' in '/home/xxx/repo/node_modules/sinon/pkg'

interface ObjectConstructor {
    fromEntries<T = any>(entries: Iterable<readonly [PropertyKey, T]>): { [k: string]: T; };
}

interface ObjectConstructor {
    fromEntries<K extends PropertyKey, V>(
      entries: Iterable<readonly [K, V]>
    ): Record<K, V>;
}

const entries: ['x' | 'y' | 'z', number][] = [
  ['x', 1],
  ['y', 3],
] as const;

const obj = Object.fromEntries(entries); // Record<'x' | 'y' | 'z', number>

obj.x satisfies number;
obj.y satisfies number;
obj.z satisfies number;

interface ObjectConstructor {
    fromEntries<K extends PropertyKey, V>(
      entries: Iterable<readonly [K, V]>
    ): IsUnion<K> extends true
      ? Partial<Record<K, V>>
      : Record<K, V>;
}

type IsNever<T> = [T] extends [never] ? true : false;

type BoolNot<A extends boolean> =
  TypeEq<A, true> extends true
    ? false
    : TypeEq<A, false> extends true
      ? true
      : never;

type IsUnion<U> = _IsUnionImpl<U, U>;

/** @internal */
type _IsUnionImpl<U, K extends U> =
  IsNever<U> extends true
    ? false
    : K extends K
      ? BoolNot<TypeEq<U, K>>
      : never;

const entries = [
  ['x', 1],
  ['y', 3],
] as const satisfies [['x', 1], ['y', 3]];

const obj = Object.fromEntries(entries) // satisfies { x: 1, y: 3 }; としたい

import { match } from 'ts-pattern';

type Cat = Readonly<{ type: 'Cat'; x: 'Meow' }>;
type Dog = Readonly<{ type: 'Dog'; y: 'Bow' }>;

type Animal = Cat | Dog;

const isCat = (v: Animal): v is Cat => v.type === 'Cat';
const isDog = (v: Animal): v is Dog => v.type === 'Dog';

export const say = (animal: Animal) =>
  match(animal)
    .when(isCat, (v) => v.x)
    .when(isDog, (v) => v.y)
    .exhaustive();

import { match } from 'ts-pattern';

type Animal = Readonly<{ type: 'Cat'; x: 'Meow' } | { type: 'Dog'; y: 'Bow' }>;

export const say = (animal: Animal) =>
  match(animal)
    .when(
      (v) => v.type === 'Cat',
      (v) => v.x,
    )
    .when(
      (v) => v.type === 'Dog',
      (v) => v.y,
    )
    // @ts-expect-error
    .exhaustive();

// rollup.config.ts

import * as replace from '@rollup/plugin-replace';
import * as typescript from '@rollup/plugin-typescript';
import { defineConfig } from 'rollup';

const config = defineConfig({
  input: 'src/index.ts',
  output: {
    dir: 'dist',
    preserveModules: true,
  },
  plugins: [
    replace.default({
      'import.meta.vitest': 'undefined',
    }),
    typescript.default({
      declaration: true,
      rootDir: 'src',
      declarationDir: 'dist',
    }),
  ],
});

// eslint-disable-next-line import/no-default-export
export default config;

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": false,
    "esModuleInterop": true
  }
}

import 'vitest';