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- Revert ES6 changes to arithmetics.pegjs - Use Array#forEach instead of for..of - Don't use native Array#find & Array#findIndex - Added util/arrays.js (find & findIndex) - Use Function instead of evalmaster
Futago-za Ryuu
5 years ago
12 changed files with 89 additions and 78 deletions
@ -0,0 +1,33 @@ |
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"use strict"; |
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/** |
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* The `findIndex()` method returns the index of the first element in the array that satisfies the |
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* provided testing function, otherwise `-1` is returned. |
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*/ |
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function findIndex( array, condition ) { |
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for ( let i = 0; i < array.length; ++i ) { |
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if ( condition( array[ i ], i ) ) return i; |
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} |
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return -1; |
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} |
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/** |
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* The `find()` method returns the value of the first element in the array that satisfies the |
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* provided testing function, otherwise `undefined` is returned. |
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*/ |
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function find( array, condition ) { |
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const index = findIndex( array, condition ); |
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return index < 0 ? void 0 : array[ index ]; |
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} |
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// Exports
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module.exports = { findIndex, find }; |
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@ -1,58 +1,26 @@ |
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"use strict"; |
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const code = ( () => { |
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/** |
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* `eval` the given source, using properties found in `context` as top-level variables. |
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* |
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* Based on `vm.runInContext` found in Node.js, this is a cross-env solution. |
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*/ |
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function runInContext( source, context ) { |
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let preface = ""; |
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const MODULE_VARS = { |
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const argumentKeys = Object.keys( context ); |
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const argumentValues = argumentKeys.map( argument => context[ argument ] ); |
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"module": true, |
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"process": true, |
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"code": true, |
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"runInContext": true, |
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"source": true, |
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"preface": true, |
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const object = {}; |
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argumentKeys.push( "_peg$object", `_peg$object.result = ${ source };` ); |
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argumentValues.push( object ); |
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}; |
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Function( ...argumentKeys )( ...argumentValues ); |
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Object.keys( MODULE_VARS ).forEach( name => { |
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return object.result; |
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preface += `var ${ name } = void 0;`; |
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} ); |
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} |
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function generate( name ) { |
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// Exports
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return `${ ( MODULE_VARS[ name ] ? "" : "var " ) + name } = __context.${ name };`; |
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} |
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return { generate, preface }; |
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} )(); |
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module.exports = { |
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// `eval` the given source, using properties found in `context` as top-level
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// variables, while hiding some variables in this module from the source.
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//
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// Based on `vm.runInContext` found in Node.js, this is a cross-env solution.
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runInContext( source, __context ) { |
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let preface = code.preface; |
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if ( typeof __context === "object" ) { |
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Object.keys( __context ).forEach( name => { |
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preface += code.generate( name ); |
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} ); |
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} |
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return eval( preface + source ); |
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}, |
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}; |
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module.exports = { runInContext }; |
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