This module helps to initialize an ethers provider based on environment variables.

Install

npm i ethers-provider-init --save

Usage

Depending of the environment variables the provider might use:

• the default provider ethers.provider.getDefaultProvider() if no provider is configured
• one of the currently available providers
• the fallback provider if more than one provider is configured.

const { getProvider } = require("ethers-provider-init");

const provider = getProvider();

// alternatively you can pass an object with the environment variables:
// const provider = getProvider({ CLOUDFLARE_ENABLED: "1" });

Environment variables

• ETHEREUM_NETWORK: Name of the ethereum network, default to mainnet.
• FALLBACK_QUORUM: The quorum the backend responses must agree upon before a result will be resolved when using more than one provider. By default this is half the sum of the weights.
• ETHERSCAN_API_KEY: The api key for etherscan provider.
• INFURA_PROJECT_ID: The project id for the infura provider
• INFURA_PROJECT_SECRET: The project secret for the infura provider
• ALCHEMY_API_KEY: The api key for alchemy provider.
• CLOUDFLARE_ENABLED: Set any string other than "false" to enable the cloudflare provider which doesn't require any api key.
• POCKET_APPLICATION_ID: The application id for the pocket provider.
• POCKET_APPLICATION_SECRET_KEY: The application secret for the pocket provider.
• ANKR_API_KEY: The api key for alchemy provider.
• JSON_RPC_URL: The api key for alchemy provider.

License

MIT 2022 - José Romaniello