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move lowering code to separate files
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| // This file contains tests for "lowering" syntax, which means converting it to | ||
| // older JavaScript. For example, "a ** b" becomes a call to "Math.pow(a, b)" | ||
| // when lowered. Which syntax is lowered is determined by the language target. | ||
|
|
||
| package bundler | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/evanw/esbuild/internal/parser" | ||
| ) | ||
|
|
||
| func TestLowerOptionalCatchNameCollisionNoBundle(t *testing.T) { | ||
| expectBundled(t, bundled{ | ||
| files: map[string]string{ | ||
| "/entry.js": ` | ||
| try {} | ||
| catch { var e, e2 } | ||
| var e3 | ||
| `, | ||
| }, | ||
| entryPaths: []string{"/entry.js"}, | ||
| parseOptions: parser.ParseOptions{ | ||
| IsBundling: false, | ||
| Target: parser.ES2018, | ||
| }, | ||
| bundleOptions: BundleOptions{ | ||
| IsBundling: false, | ||
| AbsOutputFile: "/out.js", | ||
| }, | ||
| expected: map[string]string{ | ||
| "/out.js": `try { | ||
| } catch (e4) { | ||
| var e, e2; | ||
| } | ||
| var e3; | ||
| `, | ||
| }, | ||
| }) | ||
| } | ||
|
|
||
| func TestLowerObjectSpreadNoBundle(t *testing.T) { | ||
| expectBundled(t, bundled{ | ||
| files: map[string]string{ | ||
| "/entry.jsx": ` | ||
| let tests = [ | ||
| {...a, ...b}, | ||
| {a, b, ...c}, | ||
| {...a, b, c}, | ||
| {a, ...b, c}, | ||
| {a, b, ...c, ...d, e, f, ...g, ...h, i, j}, | ||
| ] | ||
| let jsx = [ | ||
| <div {...a} {...b}/>, | ||
| <div a b {...c}/>, | ||
| <div {...a} b c/>, | ||
| <div a {...b} c/>, | ||
| <div a b {...c} {...d} e f {...g} {...h} i j/>, | ||
| ] | ||
| `, | ||
| }, | ||
| entryPaths: []string{"/entry.jsx"}, | ||
| parseOptions: parser.ParseOptions{ | ||
| IsBundling: false, | ||
| Target: parser.ES2017, | ||
| }, | ||
| bundleOptions: BundleOptions{ | ||
| IsBundling: false, | ||
| AbsOutputFile: "/out.js", | ||
| }, | ||
| expected: map[string]string{ | ||
| "/out.js": `let tests = [ | ||
| __assign(__assign({}, a), b), | ||
| __assign({a, b}, c), | ||
| __assign(__assign({}, a), {b, c}), | ||
| __assign(__assign({a}, b), {c}), | ||
| __assign(__assign(__assign(__assign(__assign(__assign({a, b}, c), d), {e, f}), g), h), {i, j}) | ||
| ]; | ||
| let jsx = [ | ||
| React.createElement("div", __assign(__assign({}, a), b)), | ||
| React.createElement("div", __assign({ | ||
| a: true, | ||
| b: true | ||
| }, c)), | ||
| React.createElement("div", __assign(__assign({}, a), { | ||
| b: true, | ||
| c: true | ||
| })), | ||
| React.createElement("div", __assign(__assign({ | ||
| a: true | ||
| }, b), { | ||
| c: true | ||
| })), | ||
| React.createElement("div", __assign(__assign(__assign(__assign(__assign(__assign({ | ||
| a: true, | ||
| b: true | ||
| }, c), d), { | ||
| e: true, | ||
| f: true | ||
| }), g), h), { | ||
| i: true, | ||
| j: true | ||
| })) | ||
| ]; | ||
| `, | ||
| }, | ||
| }) | ||
| } | ||
|
|
||
| func TestLowerExponentiationOperatorNoBundle(t *testing.T) { | ||
| expectBundled(t, bundled{ | ||
| files: map[string]string{ | ||
| "/entry.js": ` | ||
| let tests = { | ||
| // Exponentiation operator | ||
| 0: a ** b ** c, | ||
| 1: (a ** b) ** c, | ||
| // Exponentiation assignment operator | ||
| 2: a **= b, | ||
| 3: a.b **= c, | ||
| 4: a[b] **= c, | ||
| 5: a().b **= c, | ||
| 6: a()[b] **= c, | ||
| 7: a[b()] **= c, | ||
| 8: a()[b()] **= c, | ||
| // These all should not need capturing (no object identity) | ||
| 9: a[0] **= b, | ||
| 10: a[false] **= b, | ||
| 11: a[null] **= b, | ||
| 12: a[void 0] **= b, | ||
| 13: a[123n] **= b, | ||
| 14: a[this] **= b, | ||
| // These should need capturing (have object identitiy) | ||
| 15: a[/x/] **= b, | ||
| 16: a[{}] **= b, | ||
| 17: a[[]] **= b, | ||
| 18: a[() => {}] **= b, | ||
| 19: a[function() {}] **= b, | ||
| } | ||
| `, | ||
| }, | ||
| entryPaths: []string{"/entry.js"}, | ||
| parseOptions: parser.ParseOptions{ | ||
| IsBundling: false, | ||
| Target: parser.ES2015, | ||
| }, | ||
| bundleOptions: BundleOptions{ | ||
| IsBundling: false, | ||
| AbsOutputFile: "/out.js", | ||
| }, | ||
| expectedScanLog: "/entry.js: error: Big integer literals are from ES2020 and transforming them to ES2015 is not supported\n", | ||
| expected: map[string]string{ | ||
| "/out.js": `var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j; | ||
| let tests = { | ||
| 0: __pow(a, __pow(b, c)), | ||
| 1: __pow(__pow(a, b), c), | ||
| 2: a = __pow(a, b), | ||
| 3: a.b = __pow(a.b, c), | ||
| 4: a[b] = __pow(a[b], c), | ||
| 5: (_a = a()).b = __pow(_a.b, c), | ||
| 6: (_b = a())[b] = __pow(_b[b], c), | ||
| 7: a[_c = b()] = __pow(a[_c], c), | ||
| 8: (_d = a())[_e = b()] = __pow(_d[_e], c), | ||
| 9: a[0] = __pow(a[0], b), | ||
| 10: a[false] = __pow(a[false], b), | ||
| 11: a[null] = __pow(a[null], b), | ||
| 12: a[void 0] = __pow(a[void 0], b), | ||
| 13: a[123n] = __pow(a[123n], b), | ||
| 14: a[this] = __pow(a[this], b), | ||
| 15: a[_f = /x/] = __pow(a[_f], b), | ||
| 16: a[_g = {}] = __pow(a[_g], b), | ||
| 17: a[_h = []] = __pow(a[_h], b), | ||
| 18: a[_i = () => { | ||
| }] = __pow(a[_i], b), | ||
| 19: a[_j = function() { | ||
| }] = __pow(a[_j], b) | ||
| }; | ||
| `, | ||
| }, | ||
| }) | ||
| } |
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