Function findProjectedIncludePaths

packages/db/src/query/compiler/index.ts:1567–1655

(
  select: Record<string, any>,
  targetPath: Array<string>,
)

}

function findProjectedIncludePaths(
  select: Record<string, any>,
  targetPath: Array<string>,
): Array<ProjectedSourceIncludePath> {
  const resultPaths: Array<ProjectedSourceIncludePath> = []

  const visitSelectObject = (
    obj: Record<string, any>,
    prefix: Array<string>,
    guards: Array<ConditionalSelectGuard>,
  ) => {
    for (const [key, value] of Object.entries(obj)) {
      if (key.startsWith(`__SPREAD_SENTINEL__`)) {
        visitSpreadSentinel(key, value, prefix, guards)
        continue
      }
      visitSelectValue(value, [...prefix, key], guards)
    }
  }

  const visitSpreadSentinel = (
    key: string,
    value: any,
    path: Array<string>,
    guards: Array<ConditionalSelectGuard>,
  ) => {
    const rest = key.slice(`__SPREAD_SENTINEL__`.length)
    const splitIndex = rest.lastIndexOf(`__`)
    const pathStr = splitIndex >= 0 ? rest.slice(0, splitIndex) : rest
    const isRefExpr =
      value &&
      typeof value === `object` &&
      `type` in value &&
      value.type === `ref`
    const sourcePath = isRefExpr
      ? (value as PropRef).path
      : pathStr.split(`.`).filter(Boolean)

    if (pathStartsWith(targetPath, sourcePath)) {
      resultPaths.push({
        path: [...path, ...targetPath.slice(sourcePath.length)],
        guards,
      })
    }
  }

  const visitSelectValue = (
    value: any,
    path: Array<string>,
    guards: Array<ConditionalSelectGuard>,
  ) => {
    if (value instanceof PropRef && pathStartsWith(targetPath, value.path)) {
      resultPaths.push({
        path: [...path, ...targetPath.slice(value.path.length)],
        guards,
      })
      return
    }