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uvm - npm Package Compare versions
Comparing version 1.7.9 to 1.8.0-beta.1
| module.exports = ` | ||
| <!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> | ||
| <meta charset="UTF-8"><script type="text/javascript"> | ||
| (function (win) { | ||
| (function (self) { | ||
| var init = function (e) { | ||
| win.removeEventListener('message', init); | ||
| self.removeEventListener('message', init); | ||
| // eslint-disable-next-line no-eval | ||
| (e && e.data && (typeof e.data.__init_uvm === 'string')) && eval(e.data.__init_uvm); | ||
| }; | ||
| win.addEventListener('message', init); | ||
| }(window)); | ||
| </script> | ||
| </head></html>`; | ||
| self.addEventListener('message', init); | ||
| }(self)); | ||
| `; |
| /* | ||
| * @note | ||
| * options.bootTimeout is not implemented in browser sandbox. Reason is that as long as we use iFrame, there is no way | ||
| * to interrupt an infinite loop. | ||
| * options.bootTimeout is not implemented in browser sandbox because there is no way to interrupt an infinite loop. | ||
| */ | ||
| var _ = require('lodash'), | ||
| uuid = require('uuid'), | ||
| var uuid = require('uuid'), | ||
| Flatted = require('flatted'), | ||
| MESSAGE = 'message', | ||
| LOAD = 'load', | ||
| ERROR = 'error', | ||
| TARGET_ALL = '*', | ||
| SANDBOX_ELEMENT_TAG = 'iframe', | ||
@@ -19,27 +14,14 @@ // code for bridge | ||
| /** | ||
| * Default DOM attributes of sandbox | ||
| * @type {Object} | ||
| */ | ||
| sandboxAttributes = { | ||
| 'class': 'postman-uvm-context', | ||
| 'style': 'display:none;', | ||
| 'sandbox': 'allow-scripts' | ||
| }, | ||
| /** | ||
| * Returns the HTML to be executed inside iFrame. | ||
| * Returns the firmware code to be executed inside Web Worker. | ||
| * | ||
| * @param {String} code | ||
| * @param {String} id | ||
| * @param {Boolean} firmwareOnly | ||
| * @return {String} | ||
| */ | ||
| sandboxCode = function (code, id, firmwareOnly) { | ||
| var firmware = ` | ||
| __uvm_emit = function (args) {window.parent.postMessage({__id_uvm: "${id}",__emit_uvm: args}, "*");}; | ||
| sandboxFirmware = function (code, id) { | ||
| return ` | ||
| __uvm_emit = function (args) {self.postMessage({__id_uvm: "${id}",__emit_uvm: args});}; | ||
| try {${code}} catch (e) { setTimeout(function () { throw e; }, 0); } | ||
| (function (emit, id) { | ||
| window.addEventListener("message", function (e) { | ||
| self.addEventListener("message", function (e) { | ||
| (e && e.data && (typeof e.data.__emit_uvm === 'string') && (e.data.__id_uvm === id)) && | ||
@@ -49,9 +31,4 @@ emit(e.data.__emit_uvm); | ||
| }(__uvm_dispatch, "${id}")); | ||
| __uvm_emit('${Flatted.stringify(['load.' + id])}'); | ||
| __uvm_dispatch = null; __uvm_emit = null; | ||
| `; | ||
| return firmwareOnly ? firmware : `<!DOCTYPE html><html><head> | ||
| <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><meta charset="UTF-8"> | ||
| <script type="text/javascript">${firmware}</script></head></html>`; | ||
| }; | ||
@@ -61,12 +38,7 @@ | ||
| var id = uuid(), | ||
| code = bridgeClientCode(options.bootCode), | ||
| firmwareCode = sandboxFirmware(bridgeClientCode(options.bootCode), id), | ||
| // make sure we escape the code only once | ||
| serializedFirmware = unescape(encodeURIComponent(sandboxCode(code, id))), | ||
| iframe = options._sandbox || document.createElement(SANDBOX_ELEMENT_TAG), | ||
| // function to forward messages emitted | ||
| forwardEmits = function (e) { | ||
| if (!(e && e.data && _.isString(e.data.__emit_uvm) && (e.data.__id_uvm === id))) { return; } | ||
| if (!(e && e.data && (typeof e.data.__emit_uvm === 'string') && (e.data.__id_uvm === id))) { return; } | ||
@@ -79,68 +51,67 @@ var args; | ||
| processCallback = function () { | ||
| !options._sandbox && iframe.removeEventListener(LOAD, processCallback); | ||
| // function to forward errors emitted | ||
| forwardErrors = function (e) { | ||
| bridge.emit(ERROR, e); | ||
| }, | ||
| bridge._dispatch = function () { | ||
| if (!iframe) { | ||
| return bridge.emit(ERROR, | ||
| new Error('uvm: unable to dispatch "' + arguments[0] + '" post disconnection.')); | ||
| } | ||
| firmwareObjectURL, | ||
| worker; | ||
| iframe.contentWindow.postMessage({ | ||
| __emit_uvm: Flatted.stringify(Array.prototype.slice.call(arguments)), | ||
| __id_uvm: id | ||
| }, TARGET_ALL); | ||
| }; | ||
| // if sandbox worker is provided, we simply need to init with firmware code | ||
| // @todo validate sandbox type or APIs | ||
| if (options._sandbox) { | ||
| worker = options._sandbox; | ||
| worker.postMessage({ __init_uvm: firmwareCode }); | ||
| } | ||
| // else, spawn a new worker | ||
| else { | ||
| // convert the firmware code into a blob URL | ||
| firmwareObjectURL = window.URL.createObjectURL( | ||
| new Blob([firmwareCode], { type: 'text/javascript' }) | ||
| ); | ||
| callback(null, bridge); | ||
| }; | ||
| worker = new Worker(firmwareObjectURL); | ||
| } | ||
| // add event listener for receiving events from iframe (is removed on disconnect) | ||
| window.addEventListener(MESSAGE, forwardEmits); | ||
| // add event listener for receiving events from worker (is removed on disconnect) | ||
| // don't set `onmessage` and `onerror` as it might override external sandbox | ||
| worker.addEventListener(MESSAGE, forwardEmits); | ||
| worker.addEventListener(ERROR, forwardErrors); | ||
| // equip bridge to disconnect (i.e. delete the iframe) | ||
| bridge._disconnect = function () { | ||
| if (!iframe) { return; } | ||
| bridge._dispatch = function () { | ||
| if (!worker) { | ||
| return bridge.emit(ERROR, | ||
| new Error('uvm: unable to dispatch "' + arguments[0] + '" post disconnection.')); | ||
| } | ||
| // remove the message handler for this sandbox | ||
| window.removeEventListener(MESSAGE, forwardEmits); | ||
| // do not delete sandbox element if not created for the bridge | ||
| !options._sandbox && iframe.parentNode && iframe.parentNode.removeChild(iframe); | ||
| iframe = null; | ||
| worker.postMessage({ | ||
| __emit_uvm: Flatted.stringify(Array.prototype.slice.call(arguments)), | ||
| __id_uvm: id | ||
| }); | ||
| }; | ||
| // if sandbox element is provided, we simply need to init with firmware code and wait for load event to be fired | ||
| if (options._sandbox) { | ||
| bridge.once('load.' + id, processCallback); // on load attach the dispatcher | ||
| // equip bridge to disconnect (i.e. terminate the worker) | ||
| bridge._disconnect = function () { | ||
| if (!worker) { return; } | ||
| iframe.contentWindow.postMessage({ | ||
| __init_uvm: sandboxCode(code, id, true) // the last `true` param indicates firmwareOnly | ||
| }, TARGET_ALL); | ||
| // remove event listeners for this sandbox | ||
| worker.removeEventListener(MESSAGE, forwardEmits); | ||
| worker.removeEventListener(ERROR, forwardErrors); | ||
| return; | ||
| } | ||
| // do not terminate sandbox worker if not spawned for the bridge | ||
| if (!options._sandbox) { | ||
| worker.terminate(); | ||
| // this point onwards, it is our own iframe, so we do all the appending and other stuff to DOM | ||
| iframe.addEventListener(LOAD, processCallback); // removed right when executed | ||
| // revoke after termination. otherwise, blob reference is retained until GC | ||
| // refer: "chrome://blob-internals" | ||
| window.URL.revokeObjectURL(firmwareObjectURL); | ||
| } | ||
| // prepare an iframe as context | ||
| _.forEach(sandboxAttributes, function (val, prop) { | ||
| iframe.setAttribute(prop, val); | ||
| }); | ||
| worker = null; | ||
| }; | ||
| // add HTML and bootstrap code to the iframe | ||
| iframe.setAttribute('src', 'data:text/html;base64, ' + btoa(serializedFirmware)); | ||
| // help GC collect large variables | ||
| firmwareCode = null; | ||
| // data uri has size limits depending on the browsers | ||
| // in browsers that don't support srcdoc attribute the src attribute is accepted | ||
| // https://www.w3.org/TR/html5/semantics-embedded-content.html#an-iframe-srcdoc-document | ||
| iframe.setAttribute('srcdoc', serializedFirmware); | ||
| // now append the iframe to start processing stuff | ||
| document.body.appendChild(iframe); | ||
| // help GC collect large variables | ||
| code = null; | ||
| serializedFirmware = null; | ||
| callback(null, bridge); | ||
| }; |
| { | ||
| "name": "uvm", | ||
| "version": "1.7.9", | ||
| "version": "1.8.0-beta.1", | ||
| "description": "Universal Virtual Machine for Node and Browser", | ||
@@ -5,0 +5,0 @@ "main": "index.js", |
| # uvm [](https://travis-ci.org/postmanlabs/uvm) [](https://codecov.io/gh/postmanlabs/uvm) | ||
| Module that exposes an event emitter to send data across contexts (vm in node and iframe in browser) | ||
| Module that exposes an event emitter to send data across contexts ([VM](https://nodejs.org/api/vm.html) in Node.js and [Web Workers](https://www.w3.org/TR/workers/) in browser) | ||
@@ -5,0 +5,0 @@ ## Usage |
@@ -1,19 +0,23 @@ | ||
| (typeof window !== 'undefined' ? describe : describe.skip)('custom iframe in browser', function () { | ||
| (typeof window !== 'undefined' ? describe : describe.skip)('custom sandbox in browser', function () { | ||
| var uvm = require('../../lib'), | ||
| firmware = require('../../firmware/sandbox-base'), | ||
| iframe; | ||
| firmwareUrl, | ||
| worker; | ||
| beforeEach(function (done) { | ||
| iframe = document.createElement('iframe'); | ||
| iframe.setAttribute('src', 'data:text/html;base64, ' + | ||
| btoa(unescape(encodeURIComponent(firmware)))); | ||
| iframe.addEventListener('load', function () { | ||
| done(); | ||
| }); | ||
| document.body.appendChild(iframe); | ||
| beforeEach(function () { | ||
| firmwareUrl = window.URL.createObjectURL( | ||
| new Blob([firmware], { type: 'text/javascript' }) | ||
| ); | ||
| worker = new Worker(firmwareUrl); | ||
| }); | ||
| afterEach(function () { | ||
| worker.terminate(); | ||
| window.URL.revokeObjectURL(firmwareUrl); | ||
| worker = firmwareUrl = null; | ||
| }); | ||
| it('should load and dispatch messages', function (done) { | ||
| uvm.spawn({ | ||
| _sandbox: iframe, | ||
| _sandbox: worker, | ||
| bootCode: ` | ||
@@ -35,7 +39,2 @@ bridge.on('loopback', function (data) { | ||
| }); | ||
| afterEach(function () { | ||
| iframe.parentNode.removeChild(iframe); | ||
| iframe = null; | ||
| }); | ||
| }); |
@@ -1,2 +0,2 @@ | ||
| (typeof window !== 'undefined' ? describe : describe.skip)('custom iframe in browser', function () { | ||
| (typeof window !== 'undefined' ? describe : describe.skip)('custom sandbox in browser', function () { | ||
| var _ = require('lodash'), | ||
@@ -17,38 +17,36 @@ uvm = require('../../lib'), | ||
| return ` | ||
| <!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> | ||
| <meta charset="UTF-8"> | ||
| <script type="text/javascript"> | ||
| ${code} | ||
| </script> | ||
| <script type="text/javascript"> | ||
| (function (win) { | ||
| var init = function (e) { | ||
| win.removeEventListener('message', init); | ||
| // eslint-disable-next-line no-eval | ||
| (e && e.data && (typeof e.data.__init_uvm === 'string')) && eval(e.data.__init_uvm); | ||
| }; | ||
| win.addEventListener('message', init); | ||
| }(window)); | ||
| </script> | ||
| </head></html>`; | ||
| ${code} | ||
| (function (self) { | ||
| var init = function (e) { | ||
| self.removeEventListener('message', init); | ||
| // eslint-disable-next-line no-eval | ||
| (e && e.data && (typeof e.data.__init_uvm === 'string')) && eval(e.data.__init_uvm); | ||
| }; | ||
| self.addEventListener('message', init); | ||
| }(self)); | ||
| `; | ||
| }, | ||
| iframe; | ||
| firmwareUrl, | ||
| worker; | ||
| beforeEach(function (done) { | ||
| var fakeBundleSize = 5 * 1024 * 1024, // 10mb (5 million characters with 2 bytes each) | ||
| beforeEach(function () { | ||
| var fakeBundleSize = 5 * 1024 * 1024, // 10MB (5 million characters with 2 bytes each) | ||
| largeJSStatement = `var x = '${getLargeString(fakeBundleSize)}';`; | ||
| iframe = document.createElement('iframe'); | ||
| iframe.setAttribute('src', 'data:text/html;base64, ' + | ||
| btoa(unescape(encodeURIComponent(getFirmware(largeJSStatement))))); | ||
| iframe.setAttribute('srcdoc', unescape(encodeURIComponent(getFirmware(largeJSStatement)))); | ||
| iframe.addEventListener('load', function () { | ||
| done(); | ||
| }); | ||
| document.body.appendChild(iframe); | ||
| firmwareUrl = window.URL.createObjectURL( | ||
| new Blob([getFirmware(largeJSStatement)], { type: 'text/javascript' }) | ||
| ); | ||
| worker = new Worker(firmwareUrl); | ||
| }); | ||
| afterEach(function () { | ||
| worker.terminate(); | ||
| window.URL.revokeObjectURL(firmwareUrl); | ||
| worker = firmwareUrl = null; | ||
| }); | ||
| it('should load and dispatch messages', function (done) { | ||
| uvm.spawn({ | ||
| _sandbox: iframe, | ||
| _sandbox: worker, | ||
| bootCode: ` | ||
@@ -70,7 +68,2 @@ bridge.on('loopback', function (data) { | ||
| }); | ||
| afterEach(function () { | ||
| iframe.parentNode.removeChild(iframe); | ||
| iframe = null; | ||
| }); | ||
| }); |
| ((typeof window === 'undefined') ? describe : describe.skip)('uvm timeout option', function () { | ||
| var uvm = require('../../lib'); | ||
| // options.bootTimeout is not implemented in browser sandbox. Reason is that as long as we use iFrame, there is no | ||
| // way to interrupt an infinite loop. | ||
| // options.bootTimeout is not implemented in browser sandbox because there | ||
| // is no way to interrupt an infinite loop. | ||
| it('must exit if bootCode has infinite loop', function (done) { | ||
@@ -23,4 +23,4 @@ uvm.spawn({ | ||
| // options.dispatchTimeout is not implemented in browser sandbox. Reason is that as long as we use iFrame, there is | ||
| // no way to interrupt an infinite loop. | ||
| // options.dispatchTimeout is not implemented in browser sandbox because | ||
| // there is no way to interrupt an infinite loop. | ||
| it('must exit if dispatch is has infinite loop', function (done) { | ||
@@ -27,0 +27,0 @@ uvm.spawn({ |
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Worsened metrics
- Total package byte prevSize
- decreased by-1.56%
123147
- Lines of code
- decreased by-1.57%
2010
- Number of low quality alerts
- increased byInfinity%
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No dependency changes