charcode-is-valid-xml-name-character

charcode-is-valid-xml-name-character

Does a given character belong to XML spec's "Production 4 OR 4a" type (is acceptable for XML element's name)

Install

This package is pure ESM. If you're not ready yet, install an older version of this program, 1.13.0 (npm i charcode-is-valid-xml-name-character@1.13.0).

npm i charcode-is-valid-xml-name-character

Quick Take

import { strict as assert } from "assert";

import {
  isProduction4,
  isProduction4a,
  validFirstChar,
  validSecondCharOnwards,
} from "charcode-is-valid-xml-name-character";

// Spec: https://www.w3.org/TR/REC-xml/#NT-NameStartChar

assert.equal(isProduction4("Z"), true);
assert.equal(isProduction4("?"), false);

assert.equal(isProduction4a("?"), false);
assert.equal(isProduction4a("-"), true);

assert.equal(validFirstChar("a"), true);
assert.equal(validFirstChar("1"), false);

assert.equal(validSecondCharOnwards("a"), true);
assert.equal(validSecondCharOnwards("?"), false);

Documentation

Please visit codsen.com for a full description of the API.

Contributing

To report bugs or request features or assistance, raise an issue on GitHub.

Licence

MIT License.

Copyright © 2010-2025 Roy Revelt and other contributors.