function-name

const NAMES_TO_REPLACE = new Map([
  ['blacklist', 'denylist'],
  ['whitelist', 'allowlist'],
  ['master', 'primary'],
  ['slave', 'secondary'],
  ['dummy', 'placeholder'],
]);

const checkString = (node, avoidString, replaceString) => {
  if (node && node.value && node.value.toLowerCase().includes(avoidString)) {
		const originalName = node.value;
		const startIndex = node.value.toLowerCase().indexOf(avoidString);
		
		const isUpperCase = node.value.charAt(startIndex) == node.value.charAt(startIndex).toUpperCase();
		
		if (isUpperCase) {
			replaceString = replaceString[0].toUpperCase() + replaceString.substring(1); 
		}
		const endIndex = startIndex + avoidString.length;
		
    const updatedName = originalName.substring(0, startIndex) + replaceString + originalName.substring(endIndex, originalName.length);
    const error = buildError(node.start.line, node.start.col,
      node.end.line, node.end.col,
      `do not use word ${avoidString}`, "INFO", "BEST_PRACTICES");
    const edit = buildEditUpdate(node.start.line, node.start.col,
      node.end.line, node.end.col,
      updatedName);
    const fix = buildFix(`use ${updatedName} instead`, [edit]);
    addError(error.addFix(fix));
  }
}

function visit(node, filename, code) {

  // If filename starts or ends with test_ or _test, do not do anything
  if (filename.includes("_test.py") || filename.startsWith("test_")) {
    return;
  }
  for (const name of NAMES_TO_REPLACE.keys()) {
    const replacement = NAMES_TO_REPLACE.get(name);
    if (node.name && node.name.value) {
      checkString(node.name, name, replacement);
    }

    // if the parameters of the function are defined
    if (node.parameters && node.parameters.values) {

      node.parameters.values.forEach(parameter => {
        checkString(parameter.name, name, replacement);
      });
    }
  }
}