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support exponentiation operator (#4593)

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This commit is contained in:
Alex Lam S.L
2021-01-24 21:48:51 +00:00
committed by GitHub
parent a08d42555a
commit 9d23ba0a22
6 changed files with 94 additions and 12 deletions
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6
lib/parse.js
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@@ -81,6 +81,7 @@ var OPERATORS = makePredicate([
"*",
"/",
"%",
"**",
">>",
"<<",
">>>",
@@ -630,7 +631,8 @@ var PRECEDENCE = function(a, ret) {
["<", ">", "<=", ">=", "in", "instanceof"],
[">>", "<<", ">>>"],
["+", "-"],
["*", "/", "%"]
["*", "/", "%"],
["**"],
], {});
var ATOMIC_START_TOKEN = makePredicate("atom bigint num regexp string");
@@ -1860,7 +1862,7 @@ function parse($TEXT, options) {
var prec = op != null ? PRECEDENCE[op] : null;
if (prec != null && prec > min_prec) {
next();
var right = expr_op(maybe_await(), prec, no_in);
var right = expr_op(maybe_await(), op == "**" ? prec - 1 : prec, no_in);
return expr_op(new AST_Binary({
start : left.start,
left : left,