@masknet/eslint-plugin/lib/rules/no-builtin-base64.js

eslint plugin for masknet

import { isIdentifier, isMemberExpression } from '../node.js';
import { createRule } from '../rule.js';
import { wrap } from '../utils.js';
export default createRule({
    name: 'no-builtin-base64',
    meta: {
        type: 'problem',
        fixable: 'code',
        docs: {
            description: 'Disallow use built-in base64 function',
        },
        schema: [],
        messages: {
            invalid: 'Disallow use {{name}}(...)',
        },
    },
    create(context) {
        return {
            CallExpression(node) {
                const name = getCalleeName(node);
                if (name !== 'atob' && name !== 'btoa')
                    return;
                context.report({
                    node,
                    messageId: 'invalid',
                    data: { name },
                    fix(fixer) {
                        const modified = wrap(context.sourceCode.getText(node.arguments[0]), (input) => {
                            const a = name === 'atob' ? '"base64"' : '"binary"';
                            const b = name === 'btoa' ? '"base64"' : '"binary"';
                            return `Buffer.from(${input}, ${a}).toString(${b})`;
                        });
                        return fixer.replaceText(node, modified);
                    },
                });
            },
        };
    },
});
function getCalleeName({ callee }) {
    if (isIdentifier(callee)) {
        return callee.name;
    }
    else if (isMemberExpression(callee) && isIdentifier(callee.property)) {
        return callee.property.name;
    }
    return '';
}
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