The Loader instantiate() function is described: https://people.mozilla.org/~jorendorff/es6-draft.html#sec-reflect.loader.prototype.instantiate
Based on that description I assume that the 'deps' property returned by instantiate() meant "dependencies" that would be loaded by the loader. That is, one can leverage the dependency traversal from a custom loader. But it's not possible to do this. Specifically: --- Otherwise, the instantiate hook must return an eventual instantiationRequest object. An instantiateRequest object has two required properties. The value of the deps property is an array of strings. Each string is the name of a module upon which the module identified by loadRequest has dependencies. The value of the execute property is a function which the loader will use to create the module and link it with its clients and dependencies. The function should expect to receive the same number of arguments as the size of the deps array and must return an eventual Module object. The arguments are Module objects and have a one-to-one correspondence with elements of the deps array. The module is evaluated during the linking process. First all of the modules it depends upon are linked and evaluated , and then passed to the execute function. Then the resulting module is linked with the downstream dependencies. --- However it turns out that the names in 'deps' are simply fetched and passed back to instantiate(). They do not enter the dependency analysis. To give a concrete example, if A depends on B depends on C and instantiate() is called with A, it can't simply return a deps list with "b". It has to perform the entire dependency analysis of A and ensure the tree is loaded. Simply returning 'b' as a deps value will result in an execution sequence like A, B, and then C, not the order C, B, A one would expect from a dependency analysis. I'm sure there is a good reason for this behavior but it should be clearly called out in the spec. jjb
_______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
