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