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/* globals marked, unfetch, ES6Promise */
if (!self.Promise) {
self.importScripts('https://cdn.jsdelivr.net/npm/es6-promise/dist/es6-promise.js');
self.Promise = ES6Promise;
}
if (!self.fetch) {
self.importScripts('https://cdn.jsdelivr.net/npm/unfetch/dist/unfetch.umd.js');
self.fetch = unfetch;
}
var versionCache = {};
var currentVersion;
onunhandledrejection = function (e) {
throw e.reason;
};
onmessage = function (e) {
if (e.data.version === currentVersion) {
parse(e);
} else {
loadVersion(e.data.version).then(function () {
parse(e);
});
}
};
function parse(e) {
switch (e.data.task) {
case 'defaults':
var defaults = {};
if (typeof marked.getDefaults === 'function') {
defaults = marked.getDefaults();
delete defaults.renderer;
} else if ('defaults' in marked) {
for (var prop in marked.defaults) {
if (prop !== 'renderer') {
defaults[prop] = marked.defaults[prop];
}
}
}
postMessage({
task: e.data.task,
defaults: defaults
});
break;
case 'parse':
var startTime = new Date();
var lexed = marked.lexer(e.data.markdown, e.data.options);
var lexedList = [];
for (var i = 0; i < lexed.length; i++) {
var lexedLine = [];
for (var j in lexed[i]) {
lexedLine.push(j + ':' + jsonString(lexed[i][j]));
}
lexedList.push('{' + lexedLine.join(', ') + '}');
}
var parsed = marked.parser(lexed, e.data.options);
var endTime = new Date();
// setTimeout(function () {
postMessage({
task: e.data.task,
lexed: lexedList.join('\n'),
parsed: parsed,
time: endTime - startTime
});
// }, 10000);
break;
}
}
function jsonString(input) {
var output = (input + '')
.replace(/\n/g, '\\n')
.replace(/\r/g, '\\r')
.replace(/\t/g, '\\t')
.replace(/\f/g, '\\f')
.replace(/[\\"']/g, '\\$&')
.replace(/\u0000/g, '\\0');
return '"' + output + '"';
};
function loadVersion(ver) {
var promise;
if (versionCache[ver]) {
promise = Promise.resolve(versionCache[ver]);
} else {
promise = fetch(ver)
.then(function (res) { return res.text(); })
.then(function (text) {
versionCache[ver] = text;
return text;
});
}
return promise.then(function (text) {
try {
// eslint-disable-next-line no-new-func
Function(text)();
} catch (err) {
throw new Error('Cannot load that version of marked');
}
currentVersion = ver;
});
}
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