Revamping to matrix style

node_modules/sucrase/dist/esm/parser/traverser/index.js

@@ -0,0 +1,18 @@
+
+import {nextToken, skipLineComment} from "../tokenizer/index";
+import {charCodes} from "../util/charcodes";
+import {input, state} from "./base";
+import {parseTopLevel} from "./statement";
+
+export function parseFile() {
+  // If enabled, skip leading hashbang line.
+  if (
+    state.pos === 0 &&
+    input.charCodeAt(0) === charCodes.numberSign &&
+    input.charCodeAt(1) === charCodes.exclamationMark
+  ) {
+    skipLineComment(2);
+  }
+  nextToken();
+  return parseTopLevel();
+}