feat(chains): add Core testnet and mainnet chains #7486
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🦋 Changeset detectedLatest commit: ec75d95 The changes in this PR will be included in the next version bump. This PR includes changesets to release 3 packages
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WalkthroughThis update introduces new chain definitions for the Core mainnet and Core testnet networks, adds their exports to the SDK's chains module, and documents the change with a new changeset file. No existing code or configuration is modified; only new definitions and metadata are added. Changes
Sequence Diagram(s)sequenceDiagram
participant SDK
participant CoreMainnetDef
participant CoreTestnetDef
SDK->>CoreMainnetDef: Import coreMainnet definition
SDK->>CoreTestnetDef: Import coreTestnet definition
SDK-->>Client: Export coreMainnet and coreTestnet chains
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Actionable comments posted: 2
🧹 Nitpick comments (3)
packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts (1)
6-6: Consider naming the constant simplycorefor consistency
Main-nets are exported asarbitrum,blast,scroll, etc.; the “Mainnet” suffix is usually omitted. Keeping the pattern avoids a new naming exception and reduces cognitive overhead.If renaming isn’t feasible (published already), at least add
coreas an alias export inexports/chains.ts.packages/thirdweb/src/exports/chains.ts (1)
27-28: Maintain naming conventions or provide alias export
AddingcoreMainnet/coreTestnetbreaks the existing pattern where mainnets don’t carry aMainnetsuffix. Either:
- Rename to
core&coreTestnet, or- Re-export
corepointing tocoreMainnetto preserve ergonomic imports.-export { coreMainnet } from "../chains/chain-definitions/core-mainnet.js"; +export { coreMainnet as core } from "../chains/chain-definitions/core-mainnet.js"; +export { coreMainnet } from "../chains/chain-definitions/core-mainnet.js"; // optional legacy name.changeset/afraid-rats-open.md (1)
5-5: Nit: expand the changeset summary
A one-liner like “Add Core mainnet (id 1116) and Core testnet (id 1114) chain definitions” helps consumers scanning the changelog.
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📒 Files selected for processing (4)
.changeset/afraid-rats-open.md(1 hunks)packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts(1 hunks)packages/thirdweb/src/chains/chain-definitions/core-testnet.ts(1 hunks)packages/thirdweb/src/exports/chains.ts(1 hunks)
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📓 Path-based instructions (2)
`**/*.{ts,tsx}`: Write idiomatic TypeScript with explicit function declarations ...
**/*.{ts,tsx}: Write idiomatic TypeScript with explicit function declarations and return types
Limit each file to one stateless, single-responsibility function for clarity
Re-use shared types from@/typesor localtypes.tsbarrels
Prefer type aliases over interface except for nominal shapes
Avoidanyandunknownunless unavoidable; narrow generics when possible
Choose composition over inheritance; leverage utility types (Partial,Pick, etc.)
Comment only ambiguous logic; avoid restating TypeScript in prose
Load heavy dependencies inside async paths to keep initial bundle lean (lazy loading)
📄 Source: CodeRabbit Inference Engine (CLAUDE.md)
List of files the instruction was applied to:
packages/thirdweb/src/chains/chain-definitions/core-testnet.tspackages/thirdweb/src/chains/chain-definitions/core-mainnet.tspackages/thirdweb/src/exports/chains.ts
`packages/thirdweb/src/exports/**/*.{ts,tsx}`: Export everything via `exports/` ...
packages/thirdweb/src/exports/**/*.{ts,tsx}: Export everything viaexports/directory, grouped by feature in the public API of the SDK
Every public symbol must have comprehensive TSDoc with at least one@exampleblock that compiles and custom annotation tags (@beta,@internal,@experimental)
📄 Source: CodeRabbit Inference Engine (CLAUDE.md)
List of files the instruction was applied to:
packages/thirdweb/src/exports/chains.ts
🧠 Learnings (5)
📓 Common learnings
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to **/*.test.{ts,tsx} : Use `FORKED_ETHEREUM_CHAIN` for mainnet interactions and `ANVIL_CHAIN` for isolated tests
.changeset/afraid-rats-open.md (2)
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Surface breaking changes prominently in PR descriptions
Learnt from: MananTank
PR: thirdweb-dev/js#7298
File: apps/dashboard/src/app/nebula-app/move-funds/move-funds.tsx:424-424
Timestamp: 2025-06-06T23:46:08.795Z
Learning: The thirdweb project has an ESLint rule that restricts direct usage of `defineChain`. When it's necessary to use `defineChain` directly, it's acceptable to disable the rule with `// eslint-disable-next-line no-restricted-syntax`.
packages/thirdweb/src/chains/chain-definitions/core-testnet.ts (5)
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to **/*.test.{ts,tsx} : Use `FORKED_ETHEREUM_CHAIN` for mainnet interactions and `ANVIL_CHAIN` for isolated tests
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to test/src/test-wallets.ts : Predefined test accounts are in `test/src/test-wallets.ts`
Learnt from: MananTank
PR: thirdweb-dev/js#7298
File: apps/dashboard/src/app/nebula-app/move-funds/move-funds.tsx:424-424
Timestamp: 2025-06-06T23:46:08.795Z
Learning: The thirdweb project has an ESLint rule that restricts direct usage of `defineChain`. When it's necessary to use `defineChain` directly, it's acceptable to disable the rule with `// eslint-disable-next-line no-restricted-syntax`.
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/wallets/**/*.{ts,tsx} : Support EIP-1193, EIP-5792, EIP-7702 standards in wallet architecture
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/extensions/**/*.{ts,tsx} : Auto-generated contracts from ABI definitions in extensions
packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts (5)
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to **/*.test.{ts,tsx} : Use `FORKED_ETHEREUM_CHAIN` for mainnet interactions and `ANVIL_CHAIN` for isolated tests
Learnt from: MananTank
PR: thirdweb-dev/js#7298
File: apps/dashboard/src/app/nebula-app/move-funds/move-funds.tsx:424-424
Timestamp: 2025-06-06T23:46:08.795Z
Learning: The thirdweb project has an ESLint rule that restricts direct usage of `defineChain`. When it's necessary to use `defineChain` directly, it's acceptable to disable the rule with `// eslint-disable-next-line no-restricted-syntax`.
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/extensions/**/*.{ts,tsx} : Auto-generated contracts from ABI definitions in extensions
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/wallets/**/*.{ts,tsx} : Support EIP-1193, EIP-5792, EIP-7702 standards in wallet architecture
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to test/src/test-wallets.ts : Predefined test accounts are in `test/src/test-wallets.ts`
packages/thirdweb/src/exports/chains.ts (7)
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to **/*.test.{ts,tsx} : Use `FORKED_ETHEREUM_CHAIN` for mainnet interactions and `ANVIL_CHAIN` for isolated tests
Learnt from: MananTank
PR: thirdweb-dev/js#7298
File: apps/dashboard/src/app/nebula-app/move-funds/move-funds.tsx:424-424
Timestamp: 2025-06-06T23:46:08.795Z
Learning: The thirdweb project has an ESLint rule that restricts direct usage of `defineChain`. When it's necessary to use `defineChain` directly, it's acceptable to disable the rule with `// eslint-disable-next-line no-restricted-syntax`.
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to packages/thirdweb/src/exports/**/*.{ts,tsx} : Export everything via `exports/` directory, grouped by feature in the public API of the SDK
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.488Z
Learning: Applies to test/src/test-wallets.ts : Predefined test accounts are in `test/src/test-wallets.ts`
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/extensions/**/*.{ts,tsx} : Auto-generated contracts from ABI definitions in extensions
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/exports/react.native.ts : React Native specific exports are in `src/exports/react.native.ts`
Learnt from: CR
PR: thirdweb-dev/js#0
File: CLAUDE.md:0-0
Timestamp: 2025-06-30T10:25:29.489Z
Learning: Applies to src/wallets/**/*.{ts,tsx} : Support EIP-1193, EIP-5792, EIP-7702 standards in wallet architecture
🧬 Code Graph Analysis (2)
packages/thirdweb/src/chains/chain-definitions/core-testnet.ts (1)
packages/thirdweb/src/exports/chains.ts (2)
coreTestnet(28-28)defineChain(86-86)
packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts (1)
packages/thirdweb/src/exports/chains.ts (2)
coreMainnet(27-27)defineChain(86-86)
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size-limit report 📦
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joaquim-verges
approved these changes
Jul 1, 2025
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #7486 +/- ##
==========================================
+ Coverage 51.93% 51.96% +0.02%
==========================================
Files 950 952 +2
Lines 64163 64196 +33
Branches 4229 4228 -1
==========================================
+ Hits 33326 33359 +33
Misses 30731 30731
Partials 106 106
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<!-- start pr-codex -->
---
## PR-Codex overview
This PR introduces two new chain definitions for `Core` and `Core Testnet` to the `thirdweb` package, enhancing its blockchain support.
### Detailed summary
- Added `coreMainnet` definition in `core-mainnet.ts` with block explorer and native currency details.
- Added `coreTestnet` definition in `core-testnet.ts` with block explorer, native currency details, and testnet flag.
- Exported both `coreMainnet` and `coreTestnet` in `chains.ts`.
> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`
<!-- end pr-codex -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
* **New Features**
* Added support for the Core mainnet and Core testnet blockchain networks.
* Users can now interact with these new chains, including viewing block explorer links and using native currency details.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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PR-Codex overview
This PR introduces new chain definitions for the
CoreandCore Testnet, adding them to thethirdwebpackage.Detailed summary
coreMainnetchain definition incore-mainnet.tswith block explorer and native currency details.coreTestnetchain definition incore-testnet.tswith block explorer, native currency details, and a testnet flag.coreMainnetandcoreTestnetinchains.ts.Summary by CodeRabbit