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suppress mutation of input options (#3785)

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This commit is contained in:
Alex Lam S.L
2020-04-17 08:13:49 +01:00
committed by GitHub
parent 83f42ede36
commit 9110fac9a2
2 changed files with 20 additions and 18 deletions
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26
test/mocha/minify.js
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@@ -9,18 +9,30 @@ function read(path) {
describe("minify", function() {
it("Should test basic sanity of minify with default options", function() {
var js = 'function foo(bar) { if (bar) return 3; else return 7; var u = not_called(); }';
var js = "function foo(bar) { if (bar) return 3; else return 7; var u = not_called(); }";
var result = UglifyJS.minify(js);
assert.strictEqual(result.code, 'function foo(n){return n?3:7}');
if (result.error) throw result.error;
assert.strictEqual(result.code, "function foo(n){return n?3:7}");
});
it("Should not mutate minify `options`", function() {
var options = {
compress: true,
mangle: false,
output: {},
};
var value = JSON.stringify(options);
var result = UglifyJS.minify("print(6 * 7);", options);
if (result.error) throw result.error;
assert.strictEqual(result.code, "print(42);");
assert.strictEqual(JSON.stringify(options), value);
})
it("Should skip inherited keys from `files`", function() {
var files = Object.create({ skip: this });
files[0] = "alert(1 + 1)";
var result = UglifyJS.minify(files);
if (result.error) throw result.error;
assert.strictEqual(result.code, "alert(2);");
});
it("Should work with mangle.cache", function() {
var cache = {};
var original = "";
@@ -53,7 +65,6 @@ describe("minify", function() {
].join(""));
assert.strictEqual(run_code(compressed, true), run_code(original, true));
});
it("Should work with nameCache", function() {
var cache = {};
var original = "";
@@ -86,7 +97,6 @@ describe("minify", function() {
].join(""));
assert.strictEqual(run_code(compressed, true), run_code(original, true));
});
it("Should avoid cached names when mangling top-level variables", function() {
var cache = {};
var original = "";
@@ -115,7 +125,6 @@ describe("minify", function() {
].join(""));
assert.strictEqual(run_code(compressed, true), run_code(original, true));
});
it("Should avoid cached names when mangling inner-scoped variables", function() {
var cache = {};
var original = "";
@@ -139,7 +148,6 @@ describe("minify", function() {
].join(""));
assert.strictEqual(run_code(compressed, true), run_code(original, true));
});
it("Should not parse invalid use of reserved words", function() {
assert.strictEqual(UglifyJS.minify("function enum(){}").error, undefined);
assert.strictEqual(UglifyJS.minify("function static(){}").error, undefined);
@@ -155,7 +163,6 @@ describe("minify", function() {
}});
assert.strictEqual(result.code, 'var foo={"x":1,y:2,"z":3};');
});
it("Should preserve quote styles when quote_style is 3", function() {
var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
var result = UglifyJS.minify(js, {
@@ -165,7 +172,6 @@ describe("minify", function() {
}});
assert.strictEqual(result.code, 'var foo={"x":1,y:2,\'z\':3};');
});
it("Should not preserve quotes in object literals when disabled", function() {
var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
var result = UglifyJS.minify(js, {