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takeUntil.js
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takeUntil.js
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const eqArrays = (actual, expected) => {
return actual.length === expected.length && actual.every((val, index) => val === expected[index])
? true : false;
};
const assertArraysEqual = (actual, expected) => {
for (let i = 0; i < actual.length; i++) {
typeof(actual[i]) === "string" ? actual[i] = `"${actual[i]}"` : null;
typeof(expected[i]) === "string" ? expected[i] = `"${expected[i]}"` : null;
}
if (eqArrays(actual, expected)) {
console.log(`🟢🟢🟢 Assertion Passed: [${actual}] === [${expected}]`);
} else {
console.log(`🛑🛑🛑 Assertion Failed: [${actual}] !== [${expected}]`);
}
};
const takeUntil = function(arr, callback) {
// ...
let isCondition = false;
let newArray = [];
if (Array.isArray(arr)) {
for (let item of arr) {
isCondition = callback(item);
if (isCondition) {
break;
} else {
newArray.push(item);
}
}
}
return newArray;
};
const data1 = [1, 2, 5, 7, 2, -1, 2, 4, 5];
const results1 = takeUntil(data1, x => x < 0);
assertArraysEqual(results1, [1, 2, 5, 7, 2]);
console.log('---');
const data2 = ["I've", "been", "to", "Hollywood", ",", "I've", "been", "to", "Redwood"];
const results2 = takeUntil(data2, x => x === ',');
assertArraysEqual(results2, ["I've", "been", "to", "Hollywood"]);
module.exports = takeUntil;