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improve collapsible value detection (#1638)

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- #1634 bars variables with cross-scope references in between to collapse
- but if assigned value is side-effect-free, no states can be modified, so it is safe to move
This commit is contained in:
Alex Lam S.L
2017-03-24 02:55:32 +08:00
committed by GitHub
parent 6b2f34769a
commit e918748d88
3 changed files with 73 additions and 3 deletions
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4
test/mocha/glob.js
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@@ -5,7 +5,7 @@ var path = require("path");
describe("minify() with input file globs", function() {
it("minify() with one input file glob string.", function() {
var result = Uglify.minify("test/input/issue-1242/foo.*");
assert.strictEqual(result.code, 'function foo(o){var n=2*o;print("Foo:",n)}var print=console.log.bind(console);');
assert.strictEqual(result.code, 'function foo(o){print("Foo:",2*o)}var print=console.log.bind(console);');
});
it("minify() with an array of one input file glob.", function() {
var result = Uglify.minify([
@@ -20,7 +20,7 @@ describe("minify() with input file globs", function() {
], {
compress: { toplevel: true }
});
assert.strictEqual(result.code, 'var print=console.log.bind(console),a=function(n){return 3*n}(3),b=function(n){return n/2}(12);print("qux",a,b),function(n){var o=2*n;print("Foo:",o)}(11);');
assert.strictEqual(result.code, 'var print=console.log.bind(console),a=function(n){return 3*n}(3),b=function(n){return n/2}(12);print("qux",a,b),function(n){print("Foo:",2*n)}(11);');
});
it("should throw with non-matching glob string", function() {
var glob = "test/input/issue-1242/blah.*";