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/**
* @fileOverview Any non-ASCII characters in lib/ will increase the size
* of the compiled node binary. This linter rule ensures that
* any such character is reported.
* @author Sarat Addepalli <sarat.addepalli@gmail.com>
*/
'use strict';
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
const nonAsciiRegexPattern = /[^\r\n\x20-\x7e]/;
const suggestions = {
'’': '\'',
'‛': '\'',
'‘': '\'',
'“': '"',
'‟': '"',
'”': '"',
'«': '"',
'»': '"',
'—': '-'
};
module.exports = (context) => {
const reportIfError = (node, sourceCode) => {
const matches = sourceCode.text.match(nonAsciiRegexPattern);
if (!matches) return;
const offendingCharacter = matches[0];
const offendingCharacterPosition = matches.index;
const suggestion = suggestions[offendingCharacter];
let message = `Non-ASCII character '${offendingCharacter}' detected.`;
message = suggestion ?
`${message} Consider replacing with: ${suggestion}` :
message;
context.report({
node,
message,
loc: sourceCode.getLocFromIndex(offendingCharacterPosition),
fix: (fixer) => {
return fixer.replaceText(
node,
suggestion ? `${suggestion}` : ''
);
}
});
};
return {
Program: (node) => reportIfError(node, context.getSourceCode())
};
};
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