Correct asc output stream typings, fixes AssemblyScript#485

Author: dcodeIO

cli/asc.d.ts

@@ -42,6 +42,12 @@ export const definitionFiles: { assembly: string, portable: string };
 export interface OutputStream {
   /** Writes another chunk of data to the stream. */
   write(chunk: Uint8Array | string): void;
+}
+
+/** An in-memory output stream. */
+export interface MemoryStream extends OutputStream {
+  /** Resets the stream to offset zero. */
+  reset(): void;
   /** Converts the output to a buffer. */
   toBuffer(): Uint8Array;
   /** Converts the output to a string. */
@@ -112,7 +118,7 @@ export function formatTime(time: number): string;
 export function printStats(stats: Stats, output: OutputStream): void;
 
 /** Creates a memory stream that can be used in place of stdout/stderr. */
-export function createMemoryStream(fn?: (chunk: Uint8Array | string) => void): OutputStream;
+export function createMemoryStream(fn?: (chunk: Uint8Array | string) => void): MemoryStream;
 
 /** Compatible TypeScript compiler options for syntax highlighting etc. */
 export const tscOptions: { [key: string]: any };

cli/asc.js

@@ -756,24 +756,6 @@ exports.main = function main(argv, options, callback) {
   }
 }
 
-var argumentSubstitutions = {
-  "-O"  : [ "--optimize" ],
-  "-Os" : [ "--optimize", "--shrinkLevel", "1" ],
-  "-Oz" : [ "--optimize", "--shrinkLevel", "2" ],
-  "-O0" : [ "--optimizeLevel", "0", "--shrinkLevel", "0" ],
-  "-O0s": [ "--optimizeLevel", "0", "--shrinkLevel", "1" ],
-  "-O0z": [ "--optimizeLevel", "0", "--shrinkLevel", "2" ],
-  "-O1" : [ "--optimizeLevel", "1", "--shrinkLevel", "0" ],
-  "-O1s": [ "--optimizeLevel", "1", "--shrinkLevel", "1" ],
-  "-O1z": [ "--optimizeLevel", "1", "--shrinkLevel", "2" ],
-  "-O2" : [ "--optimizeLevel", "2", "--shrinkLevel", "0" ],
-  "-O2s": [ "--optimizeLevel", "2", "--shrinkLevel", "1" ],
-  "-O2z": [ "--optimizeLevel", "2", "--shrinkLevel", "2" ],
-  "-O3" : [ "--optimizeLevel", "3", "--shrinkLevel", "0" ],
-  "-O3s": [ "--optimizeLevel", "3", "--shrinkLevel", "1" ],
-  "-O3z": [ "--optimizeLevel", "3", "--shrinkLevel", "2" ],
-};
-
 /** Checks diagnostics emitted so far for errors. */
 function checkDiagnostics(emitter, stderr) {
   var diagnostic;