eslint-plugin-vuoto/dist/rules/invisible-separators.js

ESLint plugin for detecting and fixing whitespace issues - zero-width characters, non-breaking spaces, and Unicode normalization

import { INVISIBLE_SEPARATORS } from 'vuoto/consts';
const rule = {
    meta: {
        type: 'problem',
        docs: {
            description: 'disallow invisible Unicode separators (U+2060, U+FEFF) and replace them with a normal space',
            recommended: true,
        },
        fixable: 'code',
        schema: [],
        messages: {
            unexpected: 'Unexpected invisible separator ({{ charName }}). Use a normal space instead.',
        },
    },
    create(context) {
        const sourceCode = context.sourceCode;
        const text = sourceCode.text;
        return {
            Program() {
                let match;
                while ((match = INVISIBLE_SEPARATORS.exec(text)) !== null) {
                    const index = match.index;
                    const char = match[0];
                    const charName = char === '\u2060'
                        ? 'WORD JOINER (U+2060)'
                        : 'ZERO WIDTH NO-BREAK SPACE (U+FEFF)';
                    context.report({
                        loc: sourceCode.getLocFromIndex(index),
                        messageId: 'unexpected',
                        data: { charName },
                        fix(fixer) {
                            return fixer.replaceTextRange([index, index + char.length], ' ');
                        },
                    });
                }
            },
        };
    },
};
export default rule;