examples

To run the examples, you will need to set the following config variables:

1. RPC_URL : the RPC endpoint of an Ethereum node (ex: from https://infura.io)
2. ETH_PRIVATE_KEY : a private key of an Ethereum wallet with some ETH in it

These can be sat as environment variables or in a config.json file placed in this directory.

You can use 00.setup.js to create the config.json file, however since the RPC_URL cannot be created pragmatically, you will first need to run your own node or use a third-party RPC endpoint. https://ethereumico.io/knowledge-base/infura-api-key-guide

NOTE: the API KEY mentioned in the instructions has been renamed to PROJECT ID.

Once you obtain the RPC_URL you can then run:

node 00.setup.js <RPC_URL>

or simply

./00.setup.js <RPC_URL>

This will:

1. generate a new Ethereum wallet on
2. pre-load it with Eth (at least 1 Eth)
3. save both the wallets private key and passed in RPC_URL into ./config.json file in this directory.

NOTE: All example files are marked as executables and contain a shebang line which will caused them to be executed by node if called directly. Fox example the following should work if you have previously ran the ./00.setup.js script:

./01.register.js

or if you prefer, you can provide the required config vars on command line:

RPC_URL=YOUR_NODE_OR_INFURA_URL ETH_PRIVATE_KEY=YORU_KEY ./01.register.js

You need to run ./01.register.js exactly once before attempting any other examples.

For the examples which required ether balance, you will also need to call ./02.deposit.js.

Editing or adding examples.

Example files in the /examples directory SHOULD NOT BE EDITED BY HAND. Instead, they should be built with with buildExamples script. The script uses the helpers/examplesList.js, helpers/example.js.tmpl and files from src directory. For simple methods which do not required arguments (or additional setup), including the name of the method in examplesList should be enough. For other cases, a file named the same as the entry in examplesList can be placed in src, and the content of this file will be spliced into the example.js.tmpl (in place of {{{EXAMPLE_SRC}}}).