unicode-to-plain-text/dist/handleFlipped.js

Convert fancy Unicode text to plain ASCII with smart language preservation

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.handleFlipped = void 0;
const UPSIDE_DOWN_MAP_1 = require("./maps/UPSIDE_DOWN_MAP");
const FLIP_EMOTICONS_MAP_1 = require("./maps/FLIP_EMOTICONS_MAP");
const MIRRORED_MAP_1 = require("./maps/MIRRORED_MAP");
const handleFlipped = (text) => {
    let result = removeEmoticons(text);
    if (isUpsideDown(result)) {
        return [...result]
            .map((c) => UPSIDE_DOWN_MAP_1.UPSIDE_DOWN_MAP[c] ?? c)
            .reverse()
            .join('');
    }
    if (isMirrored(result)) {
        return [...result]
            .reverse()
            .map((c) => MIRRORED_MAP_1.MIRRORED_LETTER_SWAPS[c] ?? c)
            .join('');
    }
    return result;
};
exports.handleFlipped = handleFlipped;
const removeEmoticons = (text) => {
    const emoticon = FLIP_EMOTICONS_MAP_1.FLIP_EMOTICONS_MAP.find((e) => text.includes(e));
    return emoticon ? removeEmoticons(text.replace(emoticon, '').trim()) : text;
};
const isUpsideDown = (text) => {
    const chars = [...text].filter((c) => c.trim() !== '');
    const flipped = chars.filter((c) => UPSIDE_DOWN_MAP_1.UPSIDE_DOWN_MAP[c] && !UPSIDE_DOWN_MAP_1.UPSIDE_DOWN_MAP[UPSIDE_DOWN_MAP_1.UPSIDE_DOWN_MAP[c]]).length;
    return flipped > 2 || flipped / chars.length > 0.5;
};
const isMirrored = (text) => {
    const chars = [...text].filter((c) => c.trim() !== '');
    const mirrored = chars.filter((c) => {
        const mapped = MIRRORED_MAP_1.MIRRORED_MAP[c];
        return mapped && !MIRRORED_MAP_1.MIRRORED_MAP[mapped];
    }).length;
    return mirrored > 2 && mirrored / chars.length >= 0.3;
};