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2-between.js
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47 lines (39 loc) · 961 Bytes
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'use strict';
// Implementation
const between = (str, quotes) => {
let i = str.indexOf(quotes[0]);
if (i === -1) return '';
str = str.substring(i + 1);
if (quotes[1]) {
i = str.indexOf(quotes[1]);
if (i === -1) return '';
str = str.substring(0, i);
}
return str;
};
// Tests
const assert = require('node:assert').strict;
{
const line = 'Marcus Aurelius <marcus@spqr.re>';
const email = between(line, '<>');
const expected = 'marcus@spqr.re';
assert.equal(email, expected);
}
{
const line = 'Marcus Aurelius email is marcus@spqr.re';
const email = between(line, '<>');
const expected = '';
assert.equal(email, expected);
}
{
const line = 'Marcus Aurelius email is <>';
const email = between(line, '<>');
const expected = '';
assert.equal(email, expected);
}
{
const line = 'Marcus Aurelius >marcus@spqr.re<';
const email = between(line, '<>');
const expected = '';
assert.equal(email, expected);
}