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35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
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"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = getSuggestion;
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var _damerauLevenshtein = _interopRequireDefault(require("damerau-levenshtein"));
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// Minimum edit distance to be considered a good suggestion.
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var THRESHOLD = 2;
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/**
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* Returns an array of suggestions given a word and a dictionary and limit of suggestions
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* to return.
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*/
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function getSuggestion(word) {
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var dictionary = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
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var limit = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 2;
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var distances = dictionary.reduce(function (suggestions, dictionaryWord) {
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var distance = (0, _damerauLevenshtein["default"])(word.toUpperCase(), dictionaryWord.toUpperCase());
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var steps = distance.steps;
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suggestions[dictionaryWord] = steps; // eslint-disable-line
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return suggestions;
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}, {});
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return Object.keys(distances).filter(function (suggestion) {
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return distances[suggestion] <= THRESHOLD;
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}).sort(function (a, b) {
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return distances[a] - distances[b];
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}) // Sort by distance
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.slice(0, limit);
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}
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