Mocktimism is an all-inclusive development tool for OP Stack, similar to hardhat and anvil. It serves as a valuable resource for OP Stack developers in their local and end-to-end development efforts.

Local development and testing are essential components of software development, and Mocktimism plays a key role in the broader just works initiative, aimed at ensuring the compatibility of existing Ethereum tools with Optimism.

Developing on the OP Stack comes with its own set of challenges, including:

• L1 Gas fees, which can be surprising for OP stack chain developers.
• Anvil and hardhat lack support for Optimism native bridging.
• Tedious setup when spinning up multiple devnets for applications like Evo-online.
• The Optimism devnet is resource-intensive, relies on Docker, and lacks support for hardhat/anvil features such as impersonation.

To draw an analogy, think of Mocktimism as the docker-compose for hardhat and anvil. Just as Docker is used to configure a single container, and docker-compose configures multiple containers, Mocktimism is the tool that OP-chain developers use to configure multiple chains when working with anvil and hardhat.