string-metric/dist/MetricLCS.js

Get string similarity in JavaScript or TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MetricLCS = void 0;
var LongestCommonSubsequence_1 = require("./LongestCommonSubsequence");
var utils_1 = require("./utils/utils");
var MetricLCS = /** @class */ (function () {
    function MetricLCS() {
        this.lcs = new LongestCommonSubsequence_1.LongestCommonSubsequence();
    }
    MetricLCS.prototype.distance = function (s1, s2) {
        if (utils_1.isNullOrUndefined(s1)) {
            throw new Error('s1 must neither be null nor undefined');
        }
        if (utils_1.isNullOrUndefined(s2)) {
            throw new Error('s2 must neither be null nor undefined');
        }
        if (s1 === s2) {
            return 0;
        }
        var m_len = Math.max(s1.length, s2.length);
        if (m_len == 0) {
            return 0;
        }
        return 1.0 - (1.0 * this.lcs.length(s1, s2)) / m_len;
    };
    return MetricLCS;
}());
exports.MetricLCS = MetricLCS;