53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
"use strict";
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const vowels = "aeiou".split("");
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const consonants = "bcdfghjklmnpqrstvwxyz".split("");
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function random_item(arr) {
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return arr[Math.floor(Math.random() * arr.length)];
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}
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function mutate(word) {
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const chars = word.toLowerCase().split("");
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const targetpos = Math.floor(Math.random() * word.length);
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let mode = "replace";
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if(Math.random() < 0.1) mode = "add";
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if(Math.random() > 0.9) mode = "remove";
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switch(mode) {
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case "replace":
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const targetchar = chars[targetpos];
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console.log("TARGET", targetchar, "POS", targetpos);
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let pool = consonants.concat(vowels);
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if(vowels.includes(targetchar))
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pool = vowels;
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if(consonants.includes(targetchar))
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pool = consonants;
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pool = [...pool]; // Shallow copy to avoid splice mutating the original array
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console.log("POOL BEFORE", pool);
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if(pool.includes(targetchar)) {
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console.log("REMOVING TARGET");
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pool.splice(pool.indexOf(targetchar), 1);
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}
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console.log("POOL AFTER", pool);
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let newchar = random_item(pool);
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chars.splice(targetpos, 1, newchar);
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break;
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case "add":
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chars.splice(targetpos, 0, random_item(consonants.concat(vowels)));
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break;
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case "remove":
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chars.splice(targetpos, 1);
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break;
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}
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return chars.join("");
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}
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export default mutate;
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export { mutate, random_item };
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