@20minutes/draft-convert/dist/encodeBlock.mjs

Extensibly serialize & deserialize Draft.js ContentState

import rangeSort from './util/rangeSort.mjs';
import updateMutation from './util/updateMutation.mjs';
const ENTITY_MAP = {
    '&': '&',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;',
    '\n': '<br/>'
};
export default ((block)=>{
    const blockText = [
        ...block.text
    ];
    let entities = block.entityRanges.sort(rangeSort);
    let styles = block.inlineStyleRanges.sort(rangeSort);
    let resultText = '';
    for(let index = 0; index < blockText.length; index += 1){
        const char = blockText[index];
        if (ENTITY_MAP[char] !== undefined) {
            const encoded = ENTITY_MAP[char];
            const resultIndex = [
                ...resultText
            ].length;
            resultText += encoded;
            const updateForChar = (mutation)=>updateMutation(mutation, resultIndex, char.length, encoded.length, 0, 0);
            entities = entities.map(updateForChar);
            styles = styles.map(updateForChar);
        } else {
            resultText += char;
        }
    }
    return {
        ...block,
        text: resultText,
        inlineStyleRanges: styles,
        entityRanges: entities
    };
});