perf: Move input to state and precalculate length

This also fixes a bug with async functions
2019-01-15 12:45:36 -08:00
parent ae154c86ed
commit 2dc1c91955
12 changed files with 160 additions and 126 deletions
--- a/packages/babel-parser/src/parser/location.js
+++ b/packages/babel-parser/src/parser/location.js
@@ -21,7 +21,7 @@ export default class LocationParser extends CommentsParser {
      code?: string,
    } = {},
  ): empty {
-    const loc = getLineInfo(this.input, pos);
+    const loc = getLineInfo(this.state.input, pos);
    message += ` (${loc.line}:${loc.column})`;
    // $FlowIgnore
    const err: SyntaxError & { pos: number, loc: Position } = new SyntaxError(