Function getExportedModelNames

packages/eslint-codegen-model/src/presets/model.ts:15–47

(code: string)

const contextOpaqueRe = /(?:^|[\s.])Context\s*\.\s*Opaque\s*</

export function getExportedModelNames(code: string): Array<string> {
  const result: Array<string> = []
  const add = (name: string) => {
    if (!result.includes(name)) result.push(name)
  }
  const classRe = /(^|\n)\s*export\s+class\s+(\w+)/g
  const matches = Array.from(code.matchAll(classRe))
  for (const [index, match] of matches.entries()) {
    const name = match[2]!
    const start = match.index + match[1]!.length
    // Take up to the next `export class` or 500 chars, whichever comes first,
    // then trim further to only the extends clause (before the first `{`).
    const nextClass = matches[index + 1]?.index
    const rawWindow = code.slice(start, nextClass === undefined ? start + 500 : nextClass)
    // Only look at the part before the class body opens.
    const braceIdx = rawWindow.indexOf("{")
    const extendsWindow = braceIdx === -1 ? rawWindow : rawWindow.slice(0, braceIdx)
    if (
      baseClassWithEncodedRe.test(extendsWindow)
      || (opaqueWithEncodedRe.test(extendsWindow) && !contextOpaqueRe.test(extendsWindow))
      || opaqueFacadeRe.test(extendsWindow)
      // base mode: `export class X extends __X` (facade lives on the generated `__X`)
      || new RegExp(`extends\\s+__${name}\\b`).test(extendsWindow)
    ) {
      add(name)
    }
  }
  const facadeRe = /(^|\n)\s*export\s+const\s+(\w+)\s*:\s*\2\.Schema\s*=/g
  for (const match of code.matchAll(facadeRe)) {
    add(match[2]!)
  }
  return result
}

// The extends-clause text of a model's defining class — checks the private `_X`
// (post-rewrite) first, then the exported `X` (pre-rewrite / already-facade).