Function schema

packages/effect/src/Config.ts:877–906

(codec: Schema.ConstraintCodec<T, unknown>, path?: string | ConfigProvider.Path)

 * @since 4.0.0
 */
export function schema<T>(codec: Schema.ConstraintCodec<T, unknown>, path?: string | ConfigProvider.Path): Config<T> {
  const codecStringTree = Schema.toCodecStringTree(codec)
  const encodedAst = SchemaAST.toEncoded(codecStringTree.ast)
  const decodeCursor = SchemaParser.decodeUnknownEffect(
    Schema.make<Schema.Codec<T, ConfigCursor>>(toConfigCursorAST(codecStringTree.ast))
  )
  const localPath = typeof path === "string" ? [path] : path ?? []
  return make((provider, pathPrefix) => {
    const fullPath = [...pathPrefix, ...localPath]
    return catchSourceError(loadCursor(provider, fullPath), false).pipe(
      Effect.flatMapEager((cursor) => {
        const hasInput = hasProviderInput(encodedAst, cursor.node)
        return catchSourceError(
          decodeCursor(cursor).pipe(
            Effect.mapEager((value) => resolved(value, hasInput)),
            Effect.catchEager((issue) => {
              const error = new ConfigError(
                new Schema.SchemaError(fullPath.length > 0 ? new SchemaIssue.Pointer(fullPath, issue) : issue)
              )
              return hasInput
                ? Effect.fail(evaluationFailure(error, true))
                : Effect.succeed(absent(error))
            })
          ),
          hasInput
        )
      })
    )
  })
}

/** @internal */
export const TrueValues = Schema.Literals(["true", "yes", "on", "1", "y"])