Today, the file determines whether an identifier must be exported based on its name and a few special-case rules:
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/** |
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* {@inheritDoc} |
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* Because AMP objects can travel between compilation units, we consider |
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* non-private methods exported. |
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* Should we decide to do full-program compilation (for version bound JS |
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* delivery), this could go away there. |
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*/ |
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@Override public boolean isExported(String name, boolean local) { |
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if (local) { |
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return false; |
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} |
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// This is a special case, of compiler generated super globals. |
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// Because we otherwise use ES6 modules throughout, we don't |
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// have any other similar variables. |
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if (name.startsWith("JSCompiler_")) { |
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return false; |
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} |
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// ES6 generated module names are not exported. |
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if (name.contains("$")) { |
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return false; |
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} |
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// Starting with _ explicitly exports a name. |
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if (name.startsWith("_")) { |
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return true; |
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} |
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return !name.endsWith("_") && !name.endsWith("ForTesting"); |
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} |
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/** |
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* {@inheritDoc} |
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* We cannot rename properties we treat as exported, because they may travel |
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* between compilation unit. |
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*/ |
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@Override public boolean blockRenamingForProperty(String name) { |
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return isExported(name, false); |
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} |
In order to remove this file, we'd have to do a combination of changing our codebase to no longer use the special identifiers (like *ForTesting), or replace the special-case rules with babel transforms.