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support spread syntax (#4328)

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This commit is contained in:
Alex Lam S.L
2020-12-05 21:19:31 +00:00
committed by GitHub
parent d2d56e301e
commit 1e4985ed9e
8 changed files with 635 additions and 56 deletions
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13
test/reduce.js
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@@ -135,7 +135,7 @@ module.exports = function reduce_test(testcase, minify_options, reduce_options)
if (expr && !(expr instanceof U.AST_Hole)) {
node.start._permute++;
CHANGED = true;
return expr;
return expr instanceof U.AST_Spread ? expr.expression : expr;
}
}
else if (node instanceof U.AST_Binary) {
@@ -164,7 +164,7 @@ module.exports = function reduce_test(testcase, minify_options, reduce_options)
][ ((node.start._permute += step) * steps | 0) % 3 ];
if (expr) {
CHANGED = true;
return expr;
return expr instanceof U.AST_Spread ? expr.expression : expr;
}
if (node.expression instanceof U.AST_Function) {
// hoist and return expressions from the IIFE function expression
@@ -381,9 +381,8 @@ module.exports = function reduce_test(testcase, minify_options, reduce_options)
}
if (in_list) {
// special case to drop object properties and switch branches
if (parent instanceof U.AST_Object
|| parent instanceof U.AST_Switch && parent.expression != node) {
// drop switch branches
if (parent instanceof U.AST_Switch && parent.expression != node) {
node.start._permute++;
CHANGED = true;
return List.skip;
@@ -404,7 +403,9 @@ module.exports = function reduce_test(testcase, minify_options, reduce_options)
}
// skip element/property from (destructured) array/object
if (parent instanceof U.AST_Array || parent instanceof U.AST_Destructured || parent instanceof AST_Object) {
if (parent instanceof U.AST_Array
|| parent instanceof U.AST_Destructured
|| parent instanceof U.AST_Object) {
node.start._permute++;
CHANGED = true;
return List.skip;