JSPM

Return an array of an object's own and inherited enumerable property names and symbols.

Detect native class support.

Open a URL.

Return a function which formats an error message for production.

Return a directory name.

Create a function that invokes a provided function according to a predicate function.

Get/set the process mask.

Apply a function against an accumulator and each element in a collection and return the accumulated result, iterating from right to left.

Create a fluent interface for chaining together iterator methods.

Detect native Set support.

Return the effective numeric group identity of a calling process.

Invert an object, such that keys become values and values become keys, according to a transform function.

Group values according to an indicator function and return group counts.

Fill an array-like object view from right to left with values returned from an iterator.

Function composition.

Function sequence.

Transform a function into a sequence of functions each accepting a single argument.

Invoke a function until a test condition is true.

Convert the first letter of each object key to uppercase.

Create an iterator which returns numbers incremented by one.

Test whether a collection contains `n` elements which pass a test implemented by a predicate function.

Detect native async/await support.

Detect globalThis support.

Create an iterator which returns a sequence of numbers according to a specified increment.

Invoke a function for each own enumerable property of an object.

Detect native Symbol.asyncIterator support.

Invoke a function for each element in a collection and update the collection in-place.

Create an iterator which iterates over the values of two or more iterators.

Return a JSON representation of a regular expression.

Detect native SharedArrayBuffer support.

Apply a function against an accumulator and each element in a collection and return the accumulated result.

Invoke a function n times and return an array of accumulated function return values.

Invoke a function while a test condition is true.

Platform byte order.

Node version.

Create an iterator which always returns the same value.

Create an iterator which returns unique values according to a hash function.

Return the nth iterated value.

Until a test condition is true, invoke a function for each element in a collection, iterating from right to left.

Create an empty iterator.

Detect `Object.defineProperties` support.

First-in-first-out (FIFO) queue.

Apply a function to each element in an array and assign the result to an element in an output array.

Split values into two groups according to a predicate function.

Change the current working directory.

Create an iterator which filters the values of another iterator according to a predicate function.

Detect native arrow function support.

Return an array of an object's own and inherited enumerable property names.

Create an iterator which returns the intersection of two or more iterators.

Return the effective numeric user identity of a calling process.

Create an iterator which transforms iterated values from two or more iterators by applying the iterated values as arguments to a provided function.

Detect native BigUint64Array support.

Return a directory for user-specific configuration files.

Create an iterator which returns evenly spaced dates over a specified interval.

Invoke a function once for each element in a collection, iterating from right to left.

Detect native WeakMap support.

Compact adjacency matrix.

Create an iterator pipeline.

Invoke a function once for each element in a collection.

Return an array of an object's own enumerable property key-value pairs.

Test whether all iterated values are falsy.

Revive a JSON-serialized regular expression.

Get a nested property value.

Invoke a function for each grapheme cluster (i.e., user-perceived character) in a string.

Invoke a function for each UTF-16 code unit in a string.

Invoke a function for each element in a collection, iterating from right to left.

While a test condition is true, invoke a function for each element in a collection, iterating from right to left.

Create an iterator which returns evenly spaced numbers according to a specified increment.

Return an array of an object's inherited enumerable property names and symbols.

Detect `Object.defineProperties` support.

Return the first iterated value.

Create a function that invokes a provided function according to a predicate function.

Create an iterator which returns unique values.

Test whether at least `n` iterated values are truthy.

Return a property descriptor for an object's own or inherited property.

Convert each object key to lowercase.

Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function, iterating from right to left.

Transform a curried function into a function invoked with multiple arguments.

Error tools.

Transform a curried function into a function invoked with multiple arguments.

Return an array of an object's own and inherited enumerable property values.

Return an array of an object's own and inherited symbol properties.

Split values into two groups according to a predicate function.

Group values according to an indicator function.

Test whether every iterated value passes a test implemented by a predicate function.

Revive a JSON-serialized error object.

Invoke a function for each Unicode code point in a string.

Until a test condition is true, invoke a function for each element in a collection, iterating from right to left.

Return the directory for storing temporary files.

If a function does not throw, return the function return value; otherwise, return `y`.

Test whether at least one iterated value is truthy.

Create a function that applies arguments to a provided function after transforming arguments according to a callback function.

Detect native BigInt64Array support.

Map values from one object to a new object having the same keys.

Convert the first letter of each object key to lowercase.

Return an array of an object's inherited non-enumerable property names.

Function composition.

Return the directory for storing temporary files.

Execute scripts in parallel.

Return an array of an object's own and inherited writable property names and symbols.

Return the numeric group identity of a calling process.

Reduce the number of dimensions by one of a two-dimensional nested array by applying a function against an accumulator and each element along the innermost dimension and returning the accumulation results as a one-dimensional array.

Detect native generator function support.

Detect native function name support.

Create an iterator which skips the first value of a provided iterator.

If a condition is truthy, return `x`; otherwise, return `y`.

Partially apply function arguments from the right.

Return an array of an object's own enumerable and non-enumerable property names and symbols.

Create an iterator which removes consecutive values that resolve to the same value according to a provided function.

If a condition is truthy, invoke `x`; otherwise, invoke `y`.

Return an array of an object's own and inherited non-enumerable property names.

Detect native WebAssembly support.

Platform float word order.

Invoke a function while a test condition is true.

If a predicate function returns a truthy value, invoke `x`; otherwise, invoke `y`.

Detect native Map support.

Return the smallest positive normal value capable of being represented by a numeric real type.

Define a configurable read-write accessor.

Create an object from key-value pairs.

Detect native WeakMap support.

Detect native BigUint64Array support.

Return the minimum value of a specified numeric type.

Return a partial object copy excluding properties for which a predicate (function) returns a truthy value.

Generate array tuples from input arrays.

Detect native WeakSet support.

Detect native SharedArrayBuffer support.

If a function does not throw, return the function return value; otherwise, return the return value of a second function.

Return the current user's home directory.

Map keys from one object to a new object having the same values.

Create an iterator which invokes a function for each iterated value before returning the iterated value.

Add elements from one collection to the beginning of another collection.

Return the size (in bytes) of the canonical binary representation of a specified numeric type.

Invoke a function until a test condition is true.

Detect native ArrayBuffer support.

Split values into two groups.

Create an iterator which, while a test condition is true, invokes a function for each iterated value before returning the iterated value.

Return an object's own property descriptors.

Apply a function to each nested element in a three-dimensional nested array and assign the result to a nested element in a new three-dimensional nested array.

Return an array of an object's own and inherited enumerable and non-enumerable property names.

Detect native Proxy function support.

Detect native Symbol.toStringTag support.

Generate a frequency table according to an indicator function.

Transform a function into a sequence of functions each accepting a single argument.

Detect native Int8Array support.

Array containing command-line arguments passed when launching the calling process.

Return an array of an object's own and inherited non-enumerable property names and symbols.

Convert between POSIX and Windows paths.

Return an array of an object's inherited property names and symbols.

Test whether all own properties of an object pass a test implemented by a predicate function.

Define a configurable write-only accessor.

Map values from one object to a new object having the same keys.

Test whether all elements in a collection fail a test implemented by a predicate function.

Return an array of an object's own non-enumerable property names.

Apply a function to elements in two input arrays while iterating from right to left and assign the results to an output array.

If a predicate function returns a truthy value, return `x`; otherwise, return `y`.

Fill an array-like object view with values returned from an iterator.

Create a function that invokes a provided function with reordered arguments.

Named typed tuple.

While a test condition is true, invoke a function for each element in a collection.

Create an iterator which returns the intersection of two or more iterators according to a hash function.

Apply a function against an accumulator and each element in an array and return the accumulated result.

While a test condition is true, invoke a function for each element in a collection, iterating from right to left.

Invoke a function for each element in a collection and update the collection in-place, iterating from right to left.

Test whether at least one element in a collection passes a test implemented by a predicate function, iterating from right to left.

Return the maximum finite value capable of being represented by a numeric real type.

Return the maximum safe integer capable of being represented by a numeric real type.

Test whether at least `n` iterated values pass a test implemented by a predicate function.

Invoke a function n times and return an array of accumulated function return values.

Invoke a function for each Unicode code point in a string, iterating from right to left.

Execute a set of functions in parallel.

Apply a function against an accumulator and each element in an array while iterating from right to left and return the accumulated result.

Return the maximum value of a specified numeric type.

Extract a nested property value from each element of an object array.

Detect native Int32Array support.

Return an array of an object's inherited enumerable symbol properties.

Execute functions in series, passing the results of one function as arguments to the next function.

Return an array of an object's own enumerable property names which are not integer indices.

Test whether all iterated values are truthy.

Create an iterator which removes consecutive duplicated values.

Apply a function to each nested element in a five-dimensional nested array and assign the result to a nested element in a new five-dimensional nested array.

Create an iterator which steps by a specified amount.

Return an array of an object's own and inherited enumerable property key-value pairs.

Find elements in an array-like object that satisfy a test condition.

Operating system CPU architecture for which the JavaScript runtime binary was compiled.

Until a test condition is true, invoke a function for each element in a collection.

Create an iterator which cumulatively tests whether at least `n` iterated values are truthy.

Group an object's own property values according to an indicator function.

Create an iterator which returns the first `n` values of a provided iterator.

Test whether at least one element in a collection passes a test implemented by a predicate function.

Detect native Symbol support.

Open a URL.

Create an iterator which rejects the values of another iterator according to a predicate function.

Split an object's own and inherited property values into two groups according to a predicate function.

Convert a collection to an object whose keys are determined by a provided function and whose values are the collection values, iterating from right to left.

Test whether all elements in a collection pass a test implemented by a predicate function, iterating from right to left.

Invoke a function for each UTF-16 code unit in a string, iterating from right to left.

Add one or more elements to the end of a collection.

Platform on which the current process is running.

Generate a frequency table according to an indicator function.

Apply a function to each nested element in a four-dimensional nested array and assign the result to a nested element in a new four-dimensional nested array.

Detect `Object.defineProperty` support.

Stack.

Create an iterator which steps according to a provided callback function.

Detect native Symbol.iterator support.

Operating system CPU architecture for which the JavaScript runtime binary was compiled.

Detect native WeakSet support.

Return an array of an object's inherited writable property names.

Map keys from one object to a new object having the same values.

Execute scripts in parallel.

Detect native Float32Array support.

Create a function that invokes a provided function with arguments in reverse order.

Test whether all elements in a collection pass a test implemented by a predicate function.

Tests whether every own property of an object fails a test implemented by a predicate function.

Invoke a function for each element in a collection.

Alias for eval global.

Create an iterator which prepends values to the beginning of a provided iterator.

Test whether at least one element in a collection passes a test implemented by a predicate function, iterating from right to left.

Return the minimum value of a specified numeric type.

Detect native BigInt64Array support.

Return an array of an object's own and inherited writable symbol properties.

Invoke a function while a test condition is true.

Test whether every iterated value fails a test implemented by a predicate function.

Create an iterator which returns unique values according to a predicate function.

Group values according to an indicator function.

Return the maximum value of a specified numeric type.

Function sequence.

Return an array of an object's own and inherited enumerable symbol properties.

Time a snippet.

Test whether at least one iterated value passes a test implemented by a predicate function.

Create an iterator which, while a test condition is true, invokes a function for each iterated value before returning the iterated value.

Invoke a function for each own and inherited enumerable property of an object.

Detect native Map support.

Split an object's own property values into two groups according to a predicate function.

Detect native Float64Array support.

Set a nested property value.

Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function, iterating from right to left.

Return an array of an object's inherited symbol properties.

Create an iterator which, while a test condition is false, invokes a function for each iterated value before returning the iterated value.

If a function does not return an error, invoke a callback with the function result; otherwise, invoke a callback with a value `y`.

Return an object's inherited property descriptors.

Argument function.

Group an object's own and inherited property values according to an indicator function.

Invoke a function while a test condition is true.

Create an iterator which replicates each iterated value a specified number of times.

Detect native BigInt support.

Return an array of an object's own writable property names and symbols.

Detect native class support.

Decorate a provided function such that the function's return value is provided as an argument to another function.

Detect native Uint16Array support.

Return an array of an object's inherited non-enumerable property names and symbols.