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55 lines
1.9 KiB
TypeScript
55 lines
1.9 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// This module is browser compatible.
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import {
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compareSimilarity,
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type CompareSimilarityOptions,
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} from "./compare_similarity.ts";
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/** Options for {@linkcode wordSimilaritySort}. */
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export interface WordSimilaritySortOptions extends CompareSimilarityOptions {}
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/**
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* Sorts a string-array by similarity to a given string.
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*
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* By default, calculates the distance between words using the
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* {@link https://en.wikipedia.org/wiki/Levenshtein_distance | Levenshtein distance}.
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*
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* @example Basic usage
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*
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* ```ts
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* import { wordSimilaritySort } from "@std/text/word-similarity-sort";
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* import { assertEquals } from "@std/assert";
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*
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* const possibleWords = ["length", "size", "blah", "help"];
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* const suggestions = wordSimilaritySort("hep", possibleWords);
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*
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* assertEquals(suggestions, ["help", "size", "blah", "length"]);
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* ```
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*
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* @example Case-sensitive sorting
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*
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* ```ts
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* import { wordSimilaritySort } from "@std/text/word-similarity-sort";
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* import { assertEquals } from "@std/assert";
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*
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* const possibleWords = ["length", "Size", "blah", "HELP"];
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* const suggestions = wordSimilaritySort("hep", possibleWords, { caseSensitive: true });
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*
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* assertEquals(suggestions, ["Size", "blah", "HELP", "length"]);
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* ```
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*
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* @param givenWord The string to measure distance against.
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* @param possibleWords The string-array that will be sorted. This array will
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* not be mutated, but the sorted copy will be returned.
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* @param options Options for the sort.
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* @returns A sorted copy of `possibleWords`.
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*/
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export function wordSimilaritySort(
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givenWord: string,
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possibleWords: ReadonlyArray<string>,
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options?: WordSimilaritySortOptions,
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): string[] {
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// This distance metric could be swapped/improved in the future
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return possibleWords.toSorted(compareSimilarity(givenWord, options));
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}
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