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introduce loader hook context - #20761
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e93d419CompareCedarXi
commented
May 16, 2018
good |
| useful if resolve is not hooked. | ||
| - `specifier` {string} The specifier of the module to import. | ||
| - `parentURL` {string} The URL of the module that requested the specifier. | ||
| - `vmModuleLinkHook` {object} This value can be passed to [`module.link`][] to |
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`module.link` -> `module.link()`?
| then be called at the exact point of module evaluation order for that module | ||
| in the import tree. | ||
| [`module.link`]: vm.html#vm_module_link_linker |
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`module.link` -> `module.link()`?
| const k = Object.freeze(Object.create(null)); | ||
| vmModuleLinkHookMap.set(k, this); | ||
| this.hookContext = Object.assign(Object.create(null), { |
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I'd prefer a different name since this has relations to vm and Context has a meaning of a Realm in the vm terminology.
This also seems to have some conflict with #18914 that I need to think on.
| const linkingFromLoader = vmModuleLinkHookMap.has(linker); | ||
| if (linkingFromLoader) { | ||
| const loader = vmModuleLinkHookMap.get(linker); | ||
| linker = (specifier, parent) => |
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any reason not to use an async function here?
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habits are hard to break :) nice catch
| defaultResolve, | ||
| resolve: (specifier, parentURL) => this.resolve(specifier, parentURL), | ||
| vmModuleLinkHook: k, | ||
| }); |
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If you want to deny the hook context access to outside world, you are not – the [[Prototype]] of these functions are the %FunctionPrototype% of the outside world. It would be better to create these functions in the context directly, if possible, rather than using Object/Reflect.setPrototypeOf().
devsnek
commented
May 18, 2018
I came up with an alternative approach to this which should be a bit nicer |
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes