Motoko.js
Overview
The Motoko.js package can be used to compile and run Motoko smart contracts in a web browser or Node.js.
Installation
To install the Motoko.js package, use npm:
npm i --save motoko
Usage
First, create a new Node.js project with the commands:
mkdir motoko-js-test
cd motoko-js-test
npm init
In the package.json file created by npm init, insert the following line:
"type": "module",
Then, create and open an index.js file. In this new file, import the Motoko.js package into your source code file:
import mo from 'motoko';
Create a Motoko script using the Node.js virtual file system:
mo.write('Main.mo', `
actor Main {
public query func hello() : async Text {
"Hello, world!"
};
};
`)
console.log(mo.run('Main.mo'));
Next, add a final line to generate the corresponding Candid interface for the Motoko script:
console.log(mo.candid('Main.mo'));
Run this code with the command:
node index.js
The console will return the following output:
{
stdout: '`ys6dh-5cjiq-5dc` : actor {hello : shared query () -> async Text}\n',
stderr: '',
result: { error: null }
}
service : {
hello: () -> (text) query;
}