build: target es2018

[dai-shi]

follow https://github.com/pmndrs/jotai/pull/2419

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Name	Status	Preview	Comments	Updated (UTC)
valtio	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 26, 2024 9:42am

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Size Change: +3 B (0%)

Total Size: 60.7 kB

Filename	Size	Change
dist/esm/vanilla/utils.js	3.17 kB	-1 B (0%)
dist/system/react.production.js	473 B	+2 B (0%)
dist/system/vanilla/utils.production.js	2.22 kB	+2 B (0%)

ℹ️ View Unchanged

| Filename | Size | | :--- | :---: | | `dist/esm/index.js` | 62 B | | `dist/esm/macro.js` | 698 B | | `dist/esm/macro/vite.js` | 864 B | | `dist/esm/react.js` | 732 B | | `dist/esm/react/utils.js` | 258 B | | `dist/esm/utils.js` | 68 B | | `dist/esm/vanilla.js` | 2.44 kB | | `dist/index.js` | 243 B | | `dist/macro.js` | 919 B | | `dist/macro/vite.js` | 1.08 kB | | `dist/react.js` | 668 B | | `dist/react/utils.js` | 277 B | | `dist/system/index.development.js` | 253 B | | `dist/system/index.production.js` | 183 B | | `dist/system/macro.development.js` | 780 B | | `dist/system/macro.production.js` | 556 B | | `dist/system/macro/vite.development.js` | 951 B | | `dist/system/macro/vite.production.js` | 660 B | | `dist/system/react.development.js` | 872 B | | `dist/system/react/utils.development.js` | 357 B | | `dist/system/react/utils.production.js` | 237 B | | `dist/system/utils.development.js` | 259 B | | `dist/system/utils.production.js` | 187 B | | `dist/system/vanilla.development.js` | 2.58 kB | | `dist/system/vanilla.production.js` | 1.52 kB | | `dist/system/vanilla/utils.development.js` | 3.38 kB | | `dist/umd/index.development.js` | 382 B | | `dist/umd/index.production.js` | 330 B | | `dist/umd/macro.development.js` | 1.03 kB | | `dist/umd/macro.production.js` | 721 B | | `dist/umd/macro/vite.development.js` | 1.23 kB | | `dist/umd/macro/vite.production.js` | 879 B | | `dist/umd/react.development.js` | 814 B | | `dist/umd/react.production.js` | 526 B | | `dist/umd/react/utils.development.js` | 433 B | | `dist/umd/react/utils.production.js` | 314 B | | `dist/umd/utils.development.js` | 398 B | | `dist/umd/utils.production.js` | 344 B | | `dist/umd/vanilla.development.js` | 2.76 kB | | `dist/umd/vanilla.production.js` | 1.64 kB | | `dist/umd/vanilla/utils.development.js` | 7.17 kB | | `dist/umd/vanilla/utils.production.js` | 4.93 kB | | `dist/utils.js` | 247 B | | `dist/vanilla.js` | 2.63 kB | | `dist/vanilla/utils.js` | 6.99 kB |

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