fix(build): test with old typescript versions and fix for old ts versions

[dai-shi]

In pmndrs/zustand#1348, I added a workflow to test against old ts versions. Let's follow it.

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Name	Status	Preview	Updated
valtio	✅ Ready (Inspect)	Visit Preview	Oct 9, 2022 at 8:51AM (UTC)

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React Browserify	Configuration
React Snowpack	Configuration
React Parcel	Configuration

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Size Change: 0 B

Total Size: 50.1 kB

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Filename	Size
dist/esm/index.js	731 B
dist/esm/macro.js	617 B
dist/esm/macro/vite.js	732 B
dist/esm/utils.js	4.13 kB
dist/esm/vanilla.js	2 kB
dist/index.js	883 B
dist/macro.js	910 B
dist/macro/vite.js	1.04 kB
dist/system/index.development.js	894 B
dist/system/index.production.js	512 B
dist/system/macro.development.js	725 B
dist/system/macro.production.js	555 B
dist/system/macro/vite.development.js	839 B
dist/system/macro/vite.production.js	660 B
dist/system/utils.development.js	4.35 kB
dist/system/utils.production.js	2.91 kB
dist/system/vanilla.development.js	2.11 kB
dist/system/vanilla.production.js	1.3 kB
dist/umd/index.development.js	1.01 kB
dist/umd/index.production.js	671 B
dist/umd/macro.development.js	1.06 kB
dist/umd/macro.production.js	766 B
dist/umd/macro/vite.development.js	1.21 kB
dist/umd/macro/vite.production.js	893 B
dist/umd/utils.development.js	4.86 kB
dist/umd/utils.production.js	3.09 kB
dist/umd/vanilla.development.js	2.3 kB
dist/umd/vanilla.production.js	1.4 kB
dist/utils.js	4.71 kB
dist/vanilla.js	2.2 kB

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