swc/ecmascript/minifier/tests/compress/fixture/projects/react/9/input.js
강동윤 f44e25c3af
fix(es/minifier): Improve output of minifier (#1990)
swc_common:
 - Add `Span.has_mark`.

swc_ecma_codegen:
 - Emit `1e3` for `1000`.
 - Optimize output. (#1986)

swc_ecma_minifier:
 - name mangler: Don't use keywords as an id.
 - `properties`: Optimize member expression with string properties.
 - `inline`: Inline some function expressions even if it's not fn-local.
 - `analyzer`: Track reassignment correctly.
 - `analyzer`: Track fn-local correctly.
 - `sequences`: Inject `void` if required.
 - `inline`: Inline function declarations correctly.
 - `sequences`: Merge expressions into test of if statements.
 - `sequences`: Reduce calls to an assigned variable.
 - Use `Marks` instead of `&dyn Comments`.


swc_ecma_transforms_optimization:
 - `expr_simplifier`: Fix infinite loops.

node/swc:
 - Ensure that `.transform` performs minification. (#1989)
2021-08-04 00:52:47 +09:00

45 lines
1.5 KiB
JavaScript

function lazyInitializer(payload) {
var Uninitialized = -1;
var Pending = 0;
var Resolved = 1;
var Rejected = 2;
if (payload._status === Uninitialized) {
var ctor = payload._result;
var thenable = ctor(); // Transition to the next state.
var pending = payload;
pending._status = Pending;
pending._result = thenable;
thenable.then(function (moduleObject) {
if (payload._status === Pending) {
var defaultExport = moduleObject.default;
{
if (defaultExport === undefined) {
error('lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n ' + // Break up imports to avoid accidentally parsing them as dependencies.
'const MyComponent = lazy(() => imp' + "ort('./MyComponent'))", moduleObject);
}
} // Transition to the next state.
var resolved = payload;
resolved._status = Resolved;
resolved._result = defaultExport;
}
}, function (error) {
if (payload._status === Pending) {
// Transition to the next state.
var rejected = payload;
rejected._status = Rejected;
rejected._result = error;
}
});
}
if (payload._status === Resolved) {
return payload._result;
} else {
throw payload._result;
}
}