feat(tokens): add USDT token definition#4836
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Adds a multi-chain `usdt` token definition to `viem/tokens`, mirroring the existing `usdc` definition. Covers native Tether USD (6 decimals) on mainnet, optimism, base, celo, avalanche, linea, and scroll. All addresses verified on-chain (name/symbol/decimals) before inclusion. Chains where the canonical deployment is USDT0 or a bridged variant, or uses non-6 decimals (e.g. BSC at 18), are intentionally excluded.
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Adds a multi-chain
usdttoken definition toviem/tokens, mirroring the existingusdcdefinition. This lets consumers reference Tether USD through the first-class tokens API (import { usdt } from 'viem/tokens') instead of hand-rolling their own token types.What's included
usdtcovers native Tether USD (6 decimals) on the following chains:0xdAC17F958D2ee523a2206206994597C13D831ec70x94b008aA00579c1307B0EF2c499aD98a8ce58e580xfde4C96c8593536E31F229EA8f37b2ADa2699bb20x48065fbBE25f71C9282ddf5e1cD6D6A887483D5e0x9702230A8Ea53601f5cD2dc00fDBc13d4dF4A8c70xA219439258ca9da29E9Cc4cE5596924745e12B930xf55BEC9cafDbE8730f096Aa55dad6D22d44099DfVerification
Every address was checked on-chain (
name()/symbol()/decimals()) before inclusion. Chains were intentionally excluded where the canonical deployment is not native 6-decimal Tether USD:defineToken's singledecimalsfield.usdt0definition), not native Tether.USDT.kava(bridged), not native Tether.Kept conservative on purpose; happy to add more chains if maintainers prefer broader coverage.
Notes
usdc.ts(no generated banner, sopnpm gen:tokenlistleaves it untouched).popular: true, matching USDC.patch).Checklist
pnpm vitest run src/tokens/) — includes theindex.tsexports snapshot updated forusdt.biome check).tsc --noEmit).