Fix IE11 Support (#583)
- 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
6 years ago
parent
e636ee654c
commit
616749377b
@ -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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