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function-name-support

v0.2.0

Published

Determine the level of support for function name inference.

Downloads

88,351

Readme

function-name-support

Feature detection for function names. See The names of functions in ES6 for background. Provides the same results as node-compat-table.

Installation

$ npm install --save function-name-support

Usage

const functionNameSupport = require('function-name-support')

support

A frozen object with boolean values. Compare with node-compat-table:

  • function statements: functionStatements
  • function expressions: functionExpressions
  • new Function: newFunction
  • bound functions: boundFunctions
  • variables (function): functionVariables
  • object methods (function): functionObjectMethods
  • accessor properties: accessorProperties
  • shorthand methods: shorthandMethods
  • symbol-keyed methods: symbolKeyedMethods
  • class statements: classStatements
  • class expressions: classExpressions
  • variables (class): classVariables
  • object methods (class): classObjectMethods
  • class prototype methods: classPrototypeMethods
  • class static methods: classStaticMethods

hasFullSupport

A boolean indicating whether all known function name inferences are supported.

bitFlags

An integer that stores a serialization of the support object. Useful when storing a function name (or lack thereof) for later comparisons along with details on whether the function name was inferable at all.

isSubsetOf(otherFlags): boolean

Helper method for comparing bitFlags. Returns true if it is a subset of otherFlags.

isSupersetOf(otherFlags: number): boolean

Helper method for comparing bitFlags. Returns true if it is a superset of otherFlags.