Can I shorten GWT 2.7 compilation by one permutation

Question

Step 1. Create a new GWT project through the Google Plugin for Eclipse with GWT 2.7.0

Step 2. Modify .gwt.xml to set the layout in xsiframe

 <add-linker name="xsiframe" />

Step 3. Compile the compilation-mappings.txt project showing 6 entries - 5 with a browser and one without

1737AD1FC03D9513CE7A9D806F3E21C3.cache.js
user.agent gecko1_8

263432CEAA7C118D6FF27B488528C7EF.cache.js
user.agent safari

3269EBD405702A848A8B082982A76805.cache.js
user.agent ie8

6ED13A4E7283CDD9B28BFDD052C8EC05.cache.js
user.agent ie9

EFB063823A3113BEB2C481F22CA51E1D.cache.js
user.agent ie10

Devmode:devmode.js

Step 4. Modify .gwt.xml to install a single browser with the user.agent parameter set to gecko1_8

<set-property name="user.agent" value="gecko1_8,ie9,ie10,safari" />
<set-property-fallback name="user.agent" value="gecko1_8" />
<set-property name="user.agent" value="gecko1_8" />

<!-- allow Super Dev Mode -->
<add-linker name="xsiframe" />

Step 5. Compile the compilation-mappings.txt project showing two entries without a browser

FE1687414F0A6033B32B0F59A213285B.cache.js

Devmode:devmode.js

In addition, the compilation log displays

Compiling module com.appbootup.explore.gwt.HelloWorld
   Compiling 1 permutation
      Compiling permutation 0...
   Compile of permutations succeeded
Linking into D:\workspace\GWork\HelloWorld\war\helloworld
   Link succeeded
   Compilation succeeded -- 6.434s

Question 1. Does the second permutation "devmode.js" depend on the execution time?

2. , 1 , "devmode.js".?

Answer 1

1. "devmode.js" ?

, .

2. , 1 , "devmode.js".

1 "", , . , ? , .

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- , 6,4 . , , , , node.

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