astx/mjs/compileMatcher/Optional.mjs

super powerful structural search and replace for JavaScript and TypeScript to automate your refactoring

import compileMatcher from './index.mjs'
export default function compileOptionalMatcher(path, subpath, compileOptions) {
  const matcher = compileMatcher(subpath, compileOptions)
  return {
    ...matcher,
    pattern: path,
    optional: true,

    match: (path, matchSoFar) => {
      if (path.value == null) return matchSoFar || {}
      return matcher.match(path, matchSoFar)
    },
  }
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