* check for expando initializers in resolveEntityName
when resolving type parameters in a prototype property assignment
declaration. For example, this already works:
```js
/** @template T */
function f(x) { this.x = x }
/** @returns {T} */
f.protototype.m = function () { return this.x }
```
This now works too:
```js
/** @template T */
var f = function (x) { this.x = x }
/** @returns {T} */
f.prototype.m = function () { return this.x }
```
Fixes#26826
* Lookup type parameters on prototype-assignment methods
In the same way that they're looked up on prototype-property methods.
That is, this previously worked:
```js
/** @template T */
function f() { }
/** @param {T} p */
f.prototype.m = function () { }
```
And this now works too:
```js
/** @template T */
function f() { }
f.prototype = {
/** @param {T} p */
m() { }
}
```
Note that the baselines still have errors; I'll file a followup bug for
them.
* Look up types on property assignments too
As `files` always contains declaration files of external libraries, lib files and declaration files from typeRoots, the previous condition evaluated to false for probably all projects out there.
This changes the condition to compare array length after filtering out all declaration files.
That avoids unnecessary work of path normalization in the common case where everything is ok.
equalOwnProperties would incorrectly report two map-like objects as equal in
the case where a property defined in `left` was not defined in `right` and
whose value was considered "equal" to undefined by the equalityComparer.
This bug was found by an alert on LGTM.com
* Allow JSContainers to merge with namespaces
Expando functions marked with JSContainer previously failed to merge
with namespaces. This change adds JSContainer to ValueModuleExcludes,
allowing this kind of merge.
* Improve symbol flags to fix namespace/expando merging
Calls to bindPropertyAssignment now provide which special assignment
kind they originated from. This allows better symbol flags to be set:
1. Property assignments get the FunctionScopedVariable flag, since they are
equivalent to a `namespace` exporting a `var`.
2. Prototype property assignments get the Method flag if the initialiser
is functionlike, and Property otherwise.
3. Prototype assignments get the flag Property.
(3) is still not entirely correct (it's missing the Prototype flag),
but is what existed previously. I'll try adding the Prototype flag to
see whether it changes any baselines.
* Add cross-file merge test
* Update missed baselines
* Namespace declarations are primary for merging purposes
Also, property-assignments go back to being property declarations, not
function-scoped variable declarations
* Revert unneeded changes
* Revert unneeded changes (in a codefix this time)
* Put JSContainer on all assignment declarations
This allows most of the new special-case merge code to go away. It now
uses the JSContainer special-case code, which already exists.
* Missed comment
* Fix extra newline lint
Nathan Shively-Sanders
TypeScript Bot
Daniel Rosenwasser
Klaus Meinhardt
Minh Nguyen
christian
王文璐
Anders Hejlsberg
Matt McCutchen
Sheetal Nandi
Ryan Cavanaugh
csigs
csigs
Benjamin Lichtman
Benjamin Lichtman
Wesley Wigham
Mine Starks
Sam Lanning
Tim Schaub