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make comments output more robust (#2633)

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- improve handling of comments right after `return`
- retain comments after `OutputStream`
- preserve trailing comments
- fix handling of new line before comments
- handle comments around parentheses

fixes #88
fixes #112
fixes #218
fixes #372
fixes #2629
This commit is contained in:
Alex Lam S.L
2017-12-22 04:59:54 +08:00
committed by GitHub
parent 4113609dd4
commit edb4e3bd52
7 changed files with 401 additions and 90 deletions
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6
test/mocha/comment-filter.js
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@@ -14,7 +14,7 @@ describe("comment filters", function() {
it("Should be able to filter commments with the 'some' option", function() {
var ast = UglifyJS.parse("// foo\n/*@preserve*/\n// bar\n/*@license*/\n//@license with the wrong comment type\n/*@cc_on something*/");
assert.strictEqual(ast.print_to_string({comments: "some"}), "/*@preserve*/\n/*@license*/\n/*@cc_on something*/\n");
assert.strictEqual(ast.print_to_string({comments: "some"}), "/*@preserve*/\n/*@license*/\n/*@cc_on something*/");
});
it("Should be able to filter comments by passing a function", function() {
@@ -55,12 +55,12 @@ describe("comment filters", function() {
return true;
};
assert.strictEqual(ast.print_to_string({comments: f}), "#!Random comment\n//test1\n/*test2*/\n");
assert.strictEqual(ast.print_to_string({comments: f}), "#!Random comment\n//test1\n/*test2*/");
});
it("Should never be able to filter comment5 when using 'some' as filter", function() {
var ast = UglifyJS.parse("#!foo\n//foo\n/*@preserve*/\n/* please hide me */");
assert.strictEqual(ast.print_to_string({comments: "some"}), "#!foo\n/*@preserve*/\n");
assert.strictEqual(ast.print_to_string({comments: "some"}), "#!foo\n/*@preserve*/");
});
it("Should have no problem on multiple calls", function() {