Function tryStructPrivate

packages/eslint-codegen-model/src/cli.ts:250–272

(classText: string, name: string, indent: string)

// (lighter than the Opaque class). Returns null for any body content (statics,
// getters, methods) or non-Opaque bases — those keep the class form.
function tryStructPrivate(classText: string, name: string, indent: string): string | null {
  const open = findClassBodyOpen(classText, 0)
  if (open === -1) return null
  const close = findMatchingBrace(classText, open)
  if (close === -1) return null
  const body = classText.slice(open + 1, close).replace(/\/\/[^\n]*/g, "").replace(/\/\*[\s\S]*?\*\//g, "").trim()
  if (body.length > 0) return null // has statics/getters/methods -> keep class
  // Extract STRUCT from `extends (prefix)Opaque<X, X.Encoded>()(STRUCT)`.
  const m = /\bextends\s+(?:[A-Za-z_$][\w$]*\.)?Opaque\s*<[^(]*>\s*\(\s*\)\s*\(/.exec(classText.slice(0, open))
  if (!m) return null // OpaqueType/OpaqueShape/Class/etc -> keep class form
  const argOpen = m.index + m[0].length - 1 // index of the `(` before STRUCT
  let depth = 0
  let k = argOpen
  for (; k < classText.length; k++) {
    if (classText[k] === "(") depth++
    else if (classText[k] === ")") {
      depth--
      if (depth === 0) break
    }
  }
  const struct = classText.slice(argOpen + 1, k).trim()
  return `${indent}const _${name} = ${struct}`
}

function syncFacade(source: string, modelNames: ReadonlyArray<string>, enabled: boolean): string {
  let out = source