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example-hell.mjs
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example-hell.mjs
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import { buildRocket, fetchCrew, getFuel, bookLaunchPad } from './index.mjs';
const initMission = (cb) => {
buildRocket((err, rocket) => {
if (err) {
return cb(err);
}
fetchCrew((err, crew) => {
if (err) {
return cb(err);
}
getFuel((err, fuel) => {
if (err) {
return cb(err);
}
bookLaunchPad((err, launchPad) => {
if (err) {
return cb(err);
}
cb(null, { rocket, crew, fuel, launchPad });
});
});
});
});
};
export const run = (cb) => {
const start = Date.now();
initMission((err, { rocket, crew, fuel, launchPad }) => {
if (err) {
return cb(err);
}
launchPad.addRocket(rocket, (err) => {
if (err) {
return cb(err);
}
rocket.addCrew(crew, (err) => {
if (err) {
return cb(err);
}
rocket.addFuel(fuel, (err) => {
if (err) {
return cb(err);
}
const fire = () => {
if (rocket.altitude < 100) {
rocket.fireEngine(0, (err) => {
if (err) {
return cb(err);
}
fire();
});
} else if (rocket.altitude < 400) {
if (rocket.engineIsFiring(0)) {
rocket.stopEngine(0, (err) => {
if (err) {
return cb(err);
}
rocket.runStageSeparation(0, (err) => {
if (err) {
return cb(err);
}
fire();
});
});
} else {
rocket.fireEngine(1, (err) => {
if (err) {
return cb(err);
}
fire();
});
}
} else {
rocket.stopEngine(1, (err) => {
if (err) {
return cb(err);
}
rocket.runStageSeparation(1, (err) => {
if (err) {
return cb(err);
}
console.log(`Total time: ${Math.floor((Date.now() - start) / 1000)} secs`);
cb();
});
});
}
};
fire();
});
});
});
});
};
if (typeof process !== 'undefined' && process.env.NODE_ENV !== 'test') {
run((err) => {
if (err) {
console.error(err);
process.exit(1);
}
});
}