How to Programmatically Convert ICP Into Cycles in NodeJS

A tutorial for using JavaScript to convert Internet Computer utility tokens into cycles to pay for computation and storage.

Long story short, to convert ICP to cycles you need two things:

​The description of the interface of the cycles-minting canister has to be used to initialize the communication channel.

In the following code snippets I use these particular bindings.

With 1 XDR being equal to 1 trillion cycles, I convert the result to trillion ratio before returning it.

We aim to convert readable numbers. That is why we first need a small utility that maps number to BigInt​ (because the conversion function will process such types).

A few samples of ​above function result (number -> bigint):

​Finally, to effectively convert the ICP to cycles, we can implement a cross-multiplication with the conversion rate.

​Put together in a small demo, e.g., above functions can be chained to log the result of the conversion to the console.

If run in a command line, the sample should output such a result:

​I hope this small tutorial will be useful. If you have any idea of improvements, let me know!

​To infinity and beyond
David

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