eval-serialize-typed-array

Typed Array Serialization

Serializes a typed array for dynamic code evaluation.

Installation

$ npm install eval-serialize-typed-array

Usage

var serialize = require( 'eval-serialize-typed-array' );

serialize( value )

Serializes a typed array for dynamic code evaluation.

var deepEqual = require( 'deep-equal' );
 
var arr1 = new Int8Array( 4 );
 
var str = serialize( arr1 );
// returns 'new Int8Array([0,0,0,0])'
 
var arr2 = eval( str );
// returns Int8Array( [0,0,0,0] )
 
var bool = deepEqual( arr1, arr2 );
// returns true

serialize.raw( arr )

Serializes a typed array without performing type checking.

try {
    // throws during input argument validation...
    serialize( null );
} catch ( err ) {
    console.error( err );
}
 
// To bypass validation...
var str = serialize.raw( new Float64Array( [1,2,3,4] ) );
// returns 'new Float64Array([1,2,3,4])';

Examples

var serialize = require( 'eval-serialize-typed-array' );
 
/**
* Returns a function to create a filled array.
*/
function create( arr ) {
    var f = '';
    f += 'return function fill( len ) {';
    f += 'var arr = new Array( len );';
    f += 'for ( var i = 0; i < len; i++ ) {';
    f += 'arr[ i ] = ' + serialize( arr ) + ';';
    f += '}';
    f += 'return arr;';
    f += '}';
    return ( new Function( f ) )();
}
 
var fill = create( new Float32Array( 20 ) );
 
console.log( fill( 10 ) );

To run the example code from the top-level application directory,

$ node ./examples/index.js

Tests

Unit

Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:

$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

$ make view-cov

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License

MIT license.

Copyright

Copyright © 2015. Athan Reines.