loopback-boot/test/helpers/browser.js

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var vm = require('vm');
function createContext() {
var context = {
// required by browserify
XMLHttpRequest: function() { throw new Error('not implemented'); },
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FormData: function() { throw new Error('not implemented'); },
localStorage: {
// used by `debug` module
debug: process.env.DEBUG
},
// used by DataSource.prototype.ready
setTimeout: setTimeout,
// used by `debug` module
document: { documentElement: { style: {} } },
// used by `debug` module
navigator: { userAgent: 'sandbox' },
// used by crypto-browserify & friends
Int32Array: Int32Array,
DataView: DataView,
// allow the browserified code to log messages
// call `printContextLogs(context)` to print the accumulated messages
console: {
log: function() {
this._logs.log.push(Array.prototype.slice.call(arguments));
},
warn: function() {
this._logs.warn.push(Array.prototype.slice.call(arguments));
},
error: function() {
this._logs.error.push(Array.prototype.slice.call(arguments));
},
_logs: {
log: [],
warn: [],
error: []
},
}
};
// `window` is used by loopback to detect browser runtime
context.window = context;
return vm.createContext(context);
}
exports.createContext = createContext;
function printContextLogs(context) {
for (var k in context.console._logs) {
var items = context.console._logs[k];
for (var ix in items) {
console[k].apply(console, items[ix]);
}
}
}
exports.printContextLogs = printContextLogs;