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54 lines
1.7 KiB
JavaScript
54 lines
1.7 KiB
JavaScript
/* -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; js-indent-level: 2; -*- */
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/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* This file is meant to be loaded as a ChromeWorker. It accepts messages which
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* have data of the form:
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*
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* { id, url, indent, source }
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*
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* Where `id` is a unique ID to identify this request, `url` is the url of the
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* source being pretty printed, `indent` is the number of spaces to indent the
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* code by, and `source` is the source text.
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*
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* On success, the worker responds with a message of the form:
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*
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* { id, code, mappings }
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*
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* Where `id` is the same unique ID from the request, `code` is the pretty
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* printed source text, and `mappings` is an array or source mappings from the
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* pretty printed code back to the ugly source text.
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*
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* In the case of an error, the worker responds with a message of the form:
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*
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* { id, error }
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*/
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importScripts("resource://gre/modules/devtools/acorn.js");
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importScripts("resource://gre/modules/devtools/source-map.js");
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importScripts("resource://gre/modules/devtools/pretty-fast.js");
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self.onmessage = (event) => {
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const { data: { id, url, indent, source } } = event;
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try {
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const prettified = prettyFast(source, {
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url: url,
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indent: " ".repeat(indent)
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});
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self.postMessage({
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id: id,
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code: prettified.code,
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mappings: prettified.map._mappings
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});
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} catch (e) {
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self.postMessage({
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id: id,
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error: e.message + "\n" + e.stack
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});
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}
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};
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