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@ -1,6 +1,9 @@ |
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import jsdom from 'jsdom'; |
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import clone from 'clone'; |
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// Default jsdom config.
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// These settings must override any custom settings to make sure we can iterate
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// over the window object.
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const defaultJsdomConfig = { |
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features: { |
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FetchExternalResources: false, |
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@ -8,28 +11,45 @@ const defaultJsdomConfig = { |
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} |
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}; |
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// Function to return a window object.
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// Accepts a jsdom config object that will be merged with the default options.
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// Config object must be cloned before passing through otherwise jsdom will add
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// lots of properties to the original reference.
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const createWindow = userJsdomConfig => { |
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const jsdomConfig = Object.assign({}, userJsdomConfig, defaultJsdomConfig); |
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return jsdom.jsdom('<html><body></body></html>', clone(jsdomConfig)).defaultView; |
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}; |
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// IIFE executed on import to return an array of global node properties that
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// conflict with global browser properties.
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const protectedproperties = (() => Object |
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.getOwnPropertyNames(createWindow()) |
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.filter(prop => typeof global[prop] !== 'undefined') |
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)(); |
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// Sets up global browser environment
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module.exports = (...args) => { |
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// Extract options from args
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const properties = args.filter(arg => Array.isArray(arg))[0]; |
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const userJsdomConfig = args.filter(arg => !Array.isArray(arg))[0]; |
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// Create window object
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const window = createWindow(userJsdomConfig); |
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Object |
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.getOwnPropertyNames(window) |
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// Get all global browser properties
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Object.getOwnPropertyNames(window) |
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// Remove protected properties
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.filter(prop => protectedproperties.indexOf(prop) === -1) |
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// If we're only applying specific required properties remove everything else
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.filter(prop => !(properties && properties.indexOf(prop) === -1)) |
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// Copy what's left to node's global scope
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.forEach(prop => global[prop] = window[prop]); |
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// Return reference to original window object
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return window; |
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}; |
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