redux-toolbelt | Toolbelt for redux applications | REST library
kandi X-RAY | redux-toolbelt Summary
kandi X-RAY | redux-toolbelt Summary
A set of tools for quicker, easier, less verbose and safer Redux development by welldone-software.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of redux-toolbelt
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QUESTION
As part of a library I write, I want to let the user to pass functions as object's keys:
https://github.com/welldone-software/redux-toolbelt/tree/master/packages/redux-toolbelt#makereducer
For example, in the following, increaseBy
is a function with a custom toString()
that returns a string and decreaseBy.TYPE
is a string.
ANSWER
Answered 2017-Oct-16 at 08:54According to the ES6 specification, under section "12.2.6.8 Runtime Semantics: Evaluation" for "ComputedPropertyName" in the fourth step we have:
- Return ToPropertyKey(propName).
which under "7.1.14 ToPropertyKey ( argument )" in the fourth step:
- Return ToString(key).
So the result of [expression]
will become toString
. On the other hand any string is a valid key for a property, though some of them can only be accessed via brackets.
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