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/***/ "./node_modules/lodash.throttle/index.js":
/*!***********************************************!*\
  !*** ./node_modules/lodash.throttle/index.js ***!
  \***********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global) {/**
 * lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="npm" -o ./`
 * Copyright jQuery Foundation and other contributors <https://jquery.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */

/** Used as the `TypeError` message for "Functions" methods. */
var FUNC_ERROR_TEXT = 'Expected a function';

/** Used as references for various `Number` constants. */
var NAN = 0 / 0;

/** `Object#toString` result references. */
var symbolTag = '[object Symbol]';

/** Used to match leading and trailing whitespace. */
var reTrim = /^\s+|\s+$/g;

/** Used to detect bad signed hexadecimal string values. */
var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

/** Used to detect binary string values. */
var reIsBinary = /^0b[01]+$/i;

/** Used to detect octal string values. */
var reIsOctal = /^0o[0-7]+$/i;

/** Built-in method references without a dependency on `root`. */
var freeParseInt = parseInt;

/** Detect free variable `global` from Node.js. */
var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

/** Detect free variable `self`. */
var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

/** Used as a reference to the global object. */
var root = freeGlobal || freeSelf || Function('return this')();

/** Used for built-in method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax = Math.max,
    nativeMin = Math.min;

/**
 * Gets the timestamp of the number of milliseconds that have elapsed since
 * the Unix epoch (1 January 1970 00:00:00 UTC).
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Date
 * @returns {number} Returns the timestamp.
 * @example
 *
 * _.defer(function(stamp) {
 *   console.log(_.now() - stamp);
 * }, _.now());
 * // => Logs the number of milliseconds it took for the deferred invocation.
 */
var now = function() {
  return root.Date.now();
};

/**
 * Creates a debounced function that delays invoking `func` until after `wait`
 * milliseconds have elapsed since the last time the debounced function was
 * invoked. The debounced function comes with a `cancel` method to cancel
 * delayed `func` invocations and a `flush` method to immediately invoke them.
 * Provide `options` to indicate whether `func` should be invoked on the
 * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
 * with the last arguments provided to the debounced function. Subsequent
 * calls to the debounced function return the result of the last `func`
 * invocation.
 *
 * **Note:** If `leading` and `trailing` options are `true`, `func` is
 * invoked on the trailing edge of the timeout only if the debounced function
 * is invoked more than once during the `wait` timeout.
 *
 * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
 * until to the next tick, similar to `setTimeout` with a timeout of `0`.
 *
 * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
 * for details over the differences between `_.debounce` and `_.throttle`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to debounce.
 * @param {number} [wait=0] The number of milliseconds to delay.
 * @param {Object} [options={}] The options object.
 * @param {boolean} [options.leading=false]
 *  Specify invoking on the leading edge of the timeout.
 * @param {number} [options.maxWait]
 *  The maximum time `func` is allowed to be delayed before it's invoked.
 * @param {boolean} [options.trailing=true]
 *  Specify invoking on the trailing edge of the timeout.
 * @returns {Function} Returns the new debounced function.
 * @example
 *
 * // Avoid costly calculations while the window size is in flux.
 * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
 *
 * // Invoke `sendMail` when clicked, debouncing subsequent calls.
 * jQuery(element).on('click', _.debounce(sendMail, 300, {
 *   'leading': true,
 *   'trailing': false
 * }));
 *
 * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
 * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
 * var source = new EventSource('/stream');
 * jQuery(source).on('message', debounced);
 *
 * // Cancel the trailing debounced invocation.
 * jQuery(window).on('popstate', debounced.cancel);
 */
function debounce(func, wait, options) {
  var lastArgs,
      lastThis,
      maxWait,
      result,
      timerId,
      lastCallTime,
      lastInvokeTime = 0,
      leading = false,
      maxing = false,
      trailing = true;

  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT);
  }
  wait = toNumber(wait) || 0;
  if (isObject(options)) {
    leading = !!options.leading;
    maxing = 'maxWait' in options;
    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
    trailing = 'trailing' in options ? !!options.trailing : trailing;
  }

  function invokeFunc(time) {
    var args = lastArgs,
        thisArg = lastThis;

    lastArgs = lastThis = undefined;
    lastInvokeTime = time;
    result = func.apply(thisArg, args);
    return result;
  }

  function leadingEdge(time) {
    // Reset any `maxWait` timer.
    lastInvokeTime = time;
    // Start the timer for the trailing edge.
    timerId = setTimeout(timerExpired, wait);
    // Invoke the leading edge.
    return leading ? invokeFunc(time) : result;
  }

  function remainingWait(time) {
    var timeSinceLastCall = time - lastCallTime,
        timeSinceLastInvoke = time - lastInvokeTime,
        result = wait - timeSinceLastCall;

    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;
  }

  function shouldInvoke(time) {
    var timeSinceLastCall = time - lastCallTime,
        timeSinceLastInvoke = time - lastInvokeTime;

    // Either this is the first call, activity has stopped and we're at the
    // trailing edge, the system time has gone backwards and we're treating
    // it as the trailing edge, or we've hit the `maxWait` limit.
    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
  }

  function timerExpired() {
    var time = now();
    if (shouldInvoke(time)) {
      return trailingEdge(time);
    }
    // Restart the timer.
    timerId = setTimeout(timerExpired, remainingWait(time));
  }

  function trailingEdge(time) {
    timerId = undefined;

    // Only invoke if we have `lastArgs` which means `func` has been
    // debounced at least once.
    if (trailing && lastArgs) {
      return invokeFunc(time);
    }
    lastArgs = lastThis = undefined;
    return result;
  }

  function cancel() {
    if (timerId !== undefined) {
      clearTimeout(timerId);
    }
    lastInvokeTime = 0;
    lastArgs = lastCallTime = lastThis = timerId = undefined;
  }

  function flush() {
    return timerId === undefined ? result : trailingEdge(now());
  }

  function debounced() {
    var time = now(),
        isInvoking = shouldInvoke(time);

    lastArgs = arguments;
    lastThis = this;
    lastCallTime = time;

    if (isInvoking) {
      if (timerId === undefined) {
        return leadingEdge(lastCallTime);
      }
      if (maxing) {
        // Handle invocations in a tight loop.
        timerId = setTimeout(timerExpired, wait);
        return invokeFunc(lastCallTime);
      }
    }
    if (timerId === undefined) {
      timerId = setTimeout(timerExpired, wait);
    }
    return result;
  }
  debounced.cancel = cancel;
  debounced.flush = flush;
  return debounced;
}

/**
 * Creates a throttled function that only invokes `func` at most once per
 * every `wait` milliseconds. The throttled function comes with a `cancel`
 * method to cancel delayed `func` invocations and a `flush` method to
 * immediately invoke them. Provide `options` to indicate whether `func`
 * should be invoked on the leading and/or trailing edge of the `wait`
 * timeout. The `func` is invoked with the last arguments provided to the
 * throttled function. Subsequent calls to the throttled function return the
 * result of the last `func` invocation.
 *
 * **Note:** If `leading` and `trailing` options are `true`, `func` is
 * invoked on the trailing edge of the timeout only if the throttled function
 * is invoked more than once during the `wait` timeout.
 *
 * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
 * until to the next tick, similar to `setTimeout` with a timeout of `0`.
 *
 * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
 * for details over the differences between `_.throttle` and `_.debounce`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to throttle.
 * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
 * @param {Object} [options={}] The options object.
 * @param {boolean} [options.leading=true]
 *  Specify invoking on the leading edge of the timeout.
 * @param {boolean} [options.trailing=true]
 *  Specify invoking on the trailing edge of the timeout.
 * @returns {Function} Returns the new throttled function.
 * @example
 *
 * // Avoid excessively updating the position while scrolling.
 * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
 *
 * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
 * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
 * jQuery(element).on('click', throttled);
 *
 * // Cancel the trailing throttled invocation.
 * jQuery(window).on('popstate', throttled.cancel);
 */
function throttle(func, wait, options) {
  var leading = true,
      trailing = true;

  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT);
  }
  if (isObject(options)) {
    leading = 'leading' in options ? !!options.leading : leading;
    trailing = 'trailing' in options ? !!options.trailing : trailing;
  }
  return debounce(func, wait, {
    'leading': leading,
    'maxWait': wait,
    'trailing': trailing
  });
}

/**
 * Checks if `value` is the
 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(_.noop);
 * // => true
 *
 * _.isObject(null);
 * // => false
 */
function isObject(value) {
  var type = typeof value;
  return !!value && (type == 'object' || type == 'function');
}

/**
 * Checks if `value` is object-like. A value is object-like if it's not `null`
 * and has a `typeof` result of "object".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 * @example
 *
 * _.isObjectLike({});
 * // => true
 *
 * _.isObjectLike([1, 2, 3]);
 * // => true
 *
 * _.isObjectLike(_.noop);
 * // => false
 *
 * _.isObjectLike(null);
 * // => false
 */
function isObjectLike(value) {
  return !!value && typeof value == 'object';
}

/**
 * Checks if `value` is classified as a `Symbol` primitive or object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
 * @example
 *
 * _.isSymbol(Symbol.iterator);
 * // => true
 *
 * _.isSymbol('abc');
 * // => false
 */
function isSymbol(value) {
  return typeof value == 'symbol' ||
    (isObjectLike(value) && objectToString.call(value) == symbolTag);
}

/**
 * Converts `value` to a number.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to process.
 * @returns {number} Returns the number.
 * @example
 *
 * _.toNumber(3.2);
 * // => 3.2
 *
 * _.toNumber(Number.MIN_VALUE);
 * // => 5e-324
 *
 * _.toNumber(Infinity);
 * // => Infinity
 *
 * _.toNumber('3.2');
 * // => 3.2
 */
function toNumber(value) {
  if (typeof value == 'number') {
    return value;
  }
  if (isSymbol(value)) {
    return NAN;
  }
  if (isObject(value)) {
    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
    value = isObject(other) ? (other + '') : other;
  }
  if (typeof value != 'string') {
    return value === 0 ? value : +value;
  }
  value = value.replace(reTrim, '');
  var isBinary = reIsBinary.test(value);
  return (isBinary || reIsOctal.test(value))
    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
    : (reIsBadHex.test(value) ? NAN : +value);
}

module.exports = throttle;

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js")))

/***/ }),

/***/ "./node_modules/webpack/buildin/global.js":
/*!***********************************!*\
  !*** (webpack)/buildin/global.js ***!
  \***********************************/
/*! no static exports found */
/***/ (function(module, exports) {

var g;

// This works in non-strict mode
g = (function() {
	return this;
})();

try {
	// This works if eval is allowed (see CSP)
	g = g || Function("return this")() || (1, eval)("this");
} catch (e) {
	// This works if the window reference is available
	if (typeof window === "object") g = window;
}

// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}

module.exports = g;


/***/ }),

/***/ "./preview-src/activeLineMarker.ts":
/*!*****************************************!*\
  !*** ./preview-src/activeLineMarker.ts ***!
  \*****************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
const scroll_sync_1 = __webpack_require__(/*! ./scroll-sync */ "./preview-src/scroll-sync.ts");
class ActiveLineMarker {
    onDidChangeTextEditorSelection(line) {
        const { previous } = scroll_sync_1.getElementsForSourceLine(line);
        this._update(previous && previous.element);
    }
    _update(before) {
        this._unmarkActiveElement(this._current);
        this._markActiveElement(before);
        this._current = before;
    }
    _unmarkActiveElement(element) {
        if (!element) {
            return;
        }
        element.className = element.className.replace(/\bcode-active-line\b/g, '');
    }
    _markActiveElement(element) {
        if (!element) {
            return;
        }
        element.className += ' code-active-line';
    }
}
exports.ActiveLineMarker = ActiveLineMarker;


/***/ }),

/***/ "./preview-src/events.ts":
/*!*******************************!*\
  !*** ./preview-src/events.ts ***!
  \*******************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
function onceDocumentLoaded(f) {
    if (document.readyState === 'loading' || document.readyState === 'uninitialized') {
        document.addEventListener('DOMContentLoaded', f);
    }
    else {
        f();
    }
}
exports.onceDocumentLoaded = onceDocumentLoaded;


/***/ }),

/***/ "./preview-src/index.ts":
/*!******************************!*\
  !*** ./preview-src/index.ts ***!
  \******************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
const activeLineMarker_1 = __webpack_require__(/*! ./activeLineMarker */ "./preview-src/activeLineMarker.ts");
const events_1 = __webpack_require__(/*! ./events */ "./preview-src/events.ts");
const messaging_1 = __webpack_require__(/*! ./messaging */ "./preview-src/messaging.ts");
const scroll_sync_1 = __webpack_require__(/*! ./scroll-sync */ "./preview-src/scroll-sync.ts");
const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts");
const throttle = __webpack_require__(/*! lodash.throttle */ "./node_modules/lodash.throttle/index.js");
let scrollDisabled = true;
const marker = new activeLineMarker_1.ActiveLineMarker();
const settings = settings_1.getSettings();
const vscode = acquireVsCodeApi();
// Set VS Code state
let state = settings_1.getData('data-state');
vscode.setState(state);
const messaging = messaging_1.createPosterForVsCode(vscode);
window.cspAlerter.setPoster(messaging);
window.styleLoadingMonitor.setPoster(messaging);
window.onload = () => {
    updateImageSizes();
};
events_1.onceDocumentLoaded(() => {
    if (settings.scrollPreviewWithEditor) {
        setTimeout(() => {
            const initialLine = +settings.line;
            if (!isNaN(initialLine)) {
                scrollDisabled = true;
                scroll_sync_1.scrollToRevealSourceLine(initialLine);
            }
        }, 0);
    }
});
const onUpdateView = (() => {
    const doScroll = throttle((line) => {
        scrollDisabled = true;
        scroll_sync_1.scrollToRevealSourceLine(line);
    }, 50);
    return (line, settings) => {
        if (!isNaN(line)) {
            settings.line = line;
            doScroll(line);
        }
    };
})();
let updateImageSizes = throttle(() => {
    const imageInfo = [];
    let images = document.getElementsByTagName('img');
    if (images) {
        let i;
        for (i = 0; i < images.length; i++) {
            const img = images[i];
            if (img.classList.contains('loading')) {
                img.classList.remove('loading');
            }
            imageInfo.push({
                id: img.id,
                height: img.height,
                width: img.width
            });
        }
        messaging.postMessage('cacheImageSizes', imageInfo);
    }
}, 50);
window.addEventListener('resize', () => {
    scrollDisabled = true;
    updateImageSizes();
}, true);
window.addEventListener('message', event => {
    if (event.data.source !== settings.source) {
        return;
    }
    switch (event.data.type) {
        case 'onDidChangeTextEditorSelection':
            marker.onDidChangeTextEditorSelection(event.data.line);
            break;
        case 'updateView':
            onUpdateView(event.data.line, settings);
            break;
    }
}, false);
document.addEventListener('dblclick', event => {
    if (!settings.doubleClickToSwitchToEditor) {
        return;
    }
    // Ignore clicks on links
    for (let node = event.target; node; node = node.parentNode) {
        if (node.tagName === 'A') {
            return;
        }
    }
    const offset = event.pageY;
    const line = scroll_sync_1.getEditorLineNumberForPageOffset(offset);
    if (typeof line === 'number' && !isNaN(line)) {
        messaging.postMessage('didClick', { line: Math.floor(line) });
    }
});
document.addEventListener('click', event => {
    if (!event) {
        return;
    }
    let node = event.target;
    while (node) {
        if (node.tagName && node.tagName === 'A' && node.href) {
            if (node.getAttribute('href').startsWith('#')) {
                break;
            }
            if (node.href.startsWith('file://') || node.href.startsWith('vscode-resource:') || node.href.startsWith(settings.webviewResourceRoot)) {
                const [path, fragment] = node.href.replace(/^(file:\/\/|vscode-resource:)/i, '').replace(new RegExp(`^${escapeRegExp(settings.webviewResourceRoot)}`)).split('#');
                messaging.postMessage('clickLink', { path, fragment });
                event.preventDefault();
                event.stopPropagation();
                break;
            }
            break;
        }
        node = node.parentNode;
    }
}, true);
if (settings.scrollEditorWithPreview) {
    window.addEventListener('scroll', throttle(() => {
        if (scrollDisabled) {
            scrollDisabled = false;
        }
        else {
            const line = scroll_sync_1.getEditorLineNumberForPageOffset(window.scrollY);
            if (typeof line === 'number' && !isNaN(line)) {
                messaging.postMessage('revealLine', { line });
                state.line = line;
                vscode.setState(state);
            }
        }
    }, 50));
}
function escapeRegExp(text) {
    return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
}


/***/ }),

/***/ "./preview-src/messaging.ts":
/*!**********************************!*\
  !*** ./preview-src/messaging.ts ***!
  \**********************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts");
exports.createPosterForVsCode = (vscode) => {
    return new class {
        postMessage(type, body) {
            vscode.postMessage({
                type,
                source: settings_1.getSettings().source,
                body
            });
        }
    };
};


/***/ }),

/***/ "./preview-src/scroll-sync.ts":
/*!************************************!*\
  !*** ./preview-src/scroll-sync.ts ***!
  \************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts");
function clamp(min, max, value) {
    return Math.min(max, Math.max(min, value));
}
function clampLine(line) {
    return clamp(0, settings_1.getSettings().lineCount - 1, line);
}
const getCodeLineElements = (() => {
    let elements;
    return () => {
        if (!elements) {
            elements = [{ element: document.body, line: 0 }];
            for (const element of document.getElementsByClassName('code-line')) {
                const line = +element.getAttribute('data-line');
                if (!isNaN(line)) {
                    elements.push({ element: element, line });
                }
            }
        }
        return elements;
    };
})();
/**
 * Find the html elements that map to a specific target line in the editor.
 *
 * If an exact match, returns a single element. If the line is between elements,
 * returns the element prior to and the element after the given line.
 */
function getElementsForSourceLine(targetLine) {
    const lineNumber = Math.floor(targetLine);
    const lines = getCodeLineElements();
    let previous = lines[0] || null;
    for (const entry of lines) {
        if (entry.line === lineNumber) {
            return { previous: entry, next: undefined };
        }
        else if (entry.line > lineNumber) {
            return { previous, next: entry };
        }
        previous = entry;
    }
    return { previous };
}
exports.getElementsForSourceLine = getElementsForSourceLine;
/**
 * Find the html elements that are at a specific pixel offset on the page.
 */
function getLineElementsAtPageOffset(offset) {
    const lines = getCodeLineElements();
    const position = offset - window.scrollY;
    let lo = -1;
    let hi = lines.length - 1;
    while (lo + 1 < hi) {
        const mid = Math.floor((lo + hi) / 2);
        const bounds = lines[mid].element.getBoundingClientRect();
        if (bounds.top + bounds.height >= position) {
            hi = mid;
        }
        else {
            lo = mid;
        }
    }
    const hiElement = lines[hi];
    const hiBounds = hiElement.element.getBoundingClientRect();
    if (hi >= 1 && hiBounds.top > position) {
        const loElement = lines[lo];
        return { previous: loElement, next: hiElement };
    }
    return { previous: hiElement };
}
exports.getLineElementsAtPageOffset = getLineElementsAtPageOffset;
/**
 * Attempt to reveal the element for a source line in the editor.
 */
function scrollToRevealSourceLine(line) {
    if (!settings_1.getSettings().scrollPreviewWithEditor) {
        return;
    }
    if (line <= 0) {
        window.scroll(window.scrollX, 0);
        return;
    }
    const { previous, next } = getElementsForSourceLine(line);
    if (!previous) {
        return;
    }
    let scrollTo = 0;
    const rect = previous.element.getBoundingClientRect();
    const previousTop = rect.top;
    if (next && next.line !== previous.line) {
        // Between two elements. Go to percentage offset between them.
        const betweenProgress = (line - previous.line) / (next.line - previous.line);
        const elementOffset = next.element.getBoundingClientRect().top - previousTop;
        scrollTo = previousTop + betweenProgress * elementOffset;
    }
    else {
        const progressInElement = line - Math.floor(line);
        scrollTo = previousTop + (rect.height * progressInElement);
    }
    window.scroll(window.scrollX, Math.max(1, window.scrollY + scrollTo));
}
exports.scrollToRevealSourceLine = scrollToRevealSourceLine;
function getEditorLineNumberForPageOffset(offset) {
    const { previous, next } = getLineElementsAtPageOffset(offset);
    if (previous) {
        const previousBounds = previous.element.getBoundingClientRect();
        const offsetFromPrevious = (offset - window.scrollY - previousBounds.top);
        if (next) {
            const progressBetweenElements = offsetFromPrevious / (next.element.getBoundingClientRect().top - previousBounds.top);
            const line = previous.line + progressBetweenElements * (next.line - previous.line);
            return clampLine(line);
        }
        else {
            const progressWithinElement = offsetFromPrevious / (previousBounds.height);
            const line = previous.line + progressWithinElement;
            return clampLine(line);
        }
    }
    return null;
}
exports.getEditorLineNumberForPageOffset = getEditorLineNumberForPageOffset;


/***/ }),

/***/ "./preview-src/settings.ts":
/*!*********************************!*\
  !*** ./preview-src/settings.ts ***!
  \*********************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
let cachedSettings = undefined;
function getData(key) {
    const element = document.getElementById('vscode-markdown-preview-data');
    if (element) {
        const data = element.getAttribute(key);
        if (data) {
            return JSON.parse(data);
        }
    }
    throw new Error(`Could not load data for ${key}`);
}
exports.getData = getData;
function getSettings() {
    if (cachedSettings) {
        return cachedSettings;
    }
    cachedSettings = getData('data-settings');
    if (cachedSettings) {
        return cachedSettings;
    }
    throw new Error('Could not load settings');
}
exports.getSettings = getSettings;


/***/ })

/******/ });
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Math.max,\n    nativeMin = Math.min;\n\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\nvar now = function() {\n  return root.Date.now();\n};\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastInvokeTime = 0;\n    lastArgs = lastCallTime = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if (isObject(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return debounce(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nmodule.exports = throttle;\n","var g;\r\n\r\n// This works in non-strict mode\r\ng = (function() {\r\n\treturn this;\r\n})();\r\n\r\ntry {\r\n\t// This works if eval is allowed (see CSP)\r\n\tg = g || Function(\"return this\")() || (1, eval)(\"this\");\r\n} catch (e) {\r\n\t// This works if the window reference is available\r\n\tif (typeof window === \"object\") g = window;\r\n}\r\n\r\n// g can still be undefined, but nothing to do about it...\r\n// We return undefined, instead of nothing here, so it's\r\n// easier to handle this case. if(!global) { ...}\r\n\r\nmodule.exports = g;\r\n","/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nimport { getElementsForSourceLine } from './scroll-sync';\n\nexport class ActiveLineMarker {\n\tprivate _current: any;\n\n\tonDidChangeTextEditorSelection(line: number) {\n\t\tconst { previous } = getElementsForSourceLine(line);\n\t\tthis._update(previous && previous.element);\n\t}\n\n\t_update(before: HTMLElement | undefined) {\n\t\tthis._unmarkActiveElement(this._current);\n\t\tthis._markActiveElement(before);\n\t\tthis._current = before;\n\t}\n\n\t_unmarkActiveElement(element: HTMLElement | undefined) {\n\t\tif (!element) {\n\t\t\treturn;\n\t\t}\n\t\telement.className = element.className.replace(/\\bcode-active-line\\b/g, '');\n\t}\n\n\t_markActiveElement(element: HTMLElement | undefined) {\n\t\tif (!element) {\n\t\t\treturn;\n\t\t}\n\t\telement.className += ' code-active-line';\n\t}\n}","/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\n\nexport function onceDocumentLoaded(f: () => void) {\n\tif (document.readyState === 'loading' || document.readyState as string === 'uninitialized') {\n\t\tdocument.addEventListener('DOMContentLoaded', f);\n\t} else {\n\t\tf();\n\t}\n}","/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\n\nimport { ActiveLineMarker } from './activeLineMarker';\nimport { onceDocumentLoaded } from './events';\nimport { createPosterForVsCode } from './messaging';\nimport { getEditorLineNumberForPageOffset, scrollToRevealSourceLine } from './scroll-sync';\nimport { getSettings, getData } from './settings';\nimport throttle = require('lodash.throttle');\n\ndeclare var acquireVsCodeApi: any;\n\nlet scrollDisabled = true;\nconst marker = new ActiveLineMarker();\nconst settings = getSettings();\n\nconst vscode = acquireVsCodeApi();\n\n// Set VS Code state\nlet state = getData<{ line: number }>('data-state');\nvscode.setState(state);\n\nconst messaging = createPosterForVsCode(vscode);\n\nwindow.cspAlerter.setPoster(messaging);\nwindow.styleLoadingMonitor.setPoster(messaging);\n\nwindow.onload = () => {\n\tupdateImageSizes();\n};\n\nonceDocumentLoaded(() => {\n\tif (settings.scrollPreviewWithEditor) {\n\t\tsetTimeout(() => {\n\t\t\tconst initialLine = +settings.line;\n\t\t\tif (!isNaN(initialLine)) {\n\t\t\t\tscrollDisabled = true;\n\t\t\t\tscrollToRevealSourceLine(initialLine);\n\t\t\t}\n\t\t}, 0);\n\t}\n});\n\nconst onUpdateView = (() => {\n\tconst doScroll = throttle((line: number) => {\n\t\tscrollDisabled = true;\n\t\tscrollToRevealSourceLine(line);\n\t}, 50);\n\n\treturn (line: number, settings: any) => {\n\t\tif (!isNaN(line)) {\n\t\t\tsettings.line = line;\n\t\t\tdoScroll(line);\n\t\t}\n\t};\n})();\n\nlet updateImageSizes = throttle(() => {\n\tconst imageInfo: { id: string, height: number, width: number }[] = [];\n\tlet images = document.getElementsByTagName('img');\n\tif (images) {\n\t\tlet i;\n\t\tfor (i = 0; i < images.length; i++) {\n\t\t\tconst img = images[i];\n\n\t\t\tif (img.classList.contains('loading')) {\n\t\t\t\timg.classList.remove('loading');\n\t\t\t}\n\n\t\t\timageInfo.push({\n\t\t\t\tid: img.id,\n\t\t\t\theight: img.height,\n\t\t\t\twidth: img.width\n\t\t\t});\n\t\t}\n\n\t\tmessaging.postMessage('cacheImageSizes', imageInfo);\n\t}\n}, 50);\n\nwindow.addEventListener('resize', () => {\n\tscrollDisabled = true;\n\tupdateImageSizes();\n}, true);\n\nwindow.addEventListener('message', event => {\n\tif (event.data.source !== settings.source) {\n\t\treturn;\n\t}\n\n\tswitch (event.data.type) {\n\t\tcase 'onDidChangeTextEditorSelection':\n\t\t\tmarker.onDidChangeTextEditorSelection(event.data.line);\n\t\t\tbreak;\n\n\t\tcase 'updateView':\n\t\t\tonUpdateView(event.data.line, settings);\n\t\t\tbreak;\n\t}\n}, false);\n\ndocument.addEventListener('dblclick', event => {\n\tif (!settings.doubleClickToSwitchToEditor) {\n\t\treturn;\n\t}\n\n\t// Ignore clicks on links\n\tfor (let node = event.target as HTMLElement; node; node = node.parentNode as HTMLElement) {\n\t\tif (node.tagName === 'A') {\n\t\t\treturn;\n\t\t}\n\t}\n\n\tconst offset = event.pageY;\n\tconst line = getEditorLineNumberForPageOffset(offset);\n\tif (typeof line === 'number' && !isNaN(line)) {\n\t\tmessaging.postMessage('didClick', { line: Math.floor(line) });\n\t}\n});\n\ndocument.addEventListener('click', event => {\n\tif (!event) {\n\t\treturn;\n\t}\n\n\tlet node: any = event.target;\n\twhile (node) {\n\t\tif (node.tagName && node.tagName === 'A' && node.href) {\n\t\t\tif (node.getAttribute('href').startsWith('#')) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif (node.href.startsWith('file://') || node.href.startsWith('vscode-resource:') || node.href.startsWith(settings.webviewResourceRoot)) {\n\t\t\t\tconst [path, fragment] = node.href.replace(/^(file:\\/\\/|vscode-resource:)/i, '').replace(new RegExp(`^${escapeRegExp(settings.webviewResourceRoot)}`)).split('#');\n\t\t\t\tmessaging.postMessage('clickLink', { path, fragment });\n\t\t\t\tevent.preventDefault();\n\t\t\t\tevent.stopPropagation();\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tbreak;\n\t\t}\n\t\tnode = node.parentNode;\n\t}\n}, true);\n\nif (settings.scrollEditorWithPreview) {\n\twindow.addEventListener('scroll', throttle(() => {\n\t\tif (scrollDisabled) {\n\t\t\tscrollDisabled = false;\n\t\t} else {\n\t\t\tconst line = getEditorLineNumberForPageOffset(window.scrollY);\n\t\t\tif (typeof line === 'number' && !isNaN(line)) {\n\t\t\t\tmessaging.postMessage('revealLine', { line });\n\t\t\t\tstate.line = line;\n\t\t\t\tvscode.setState(state);\n\t\t\t}\n\t\t}\n\t}, 50));\n}\n\nfunction escapeRegExp(text: string) {\n\treturn text.replace(/[-[\\]{}()*+?.,\\\\^$|#\\s]/g, '\\\\$&');\n}","/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\n\nimport { getSettings } from './settings';\n\nexport interface MessagePoster {\n\t/**\n\t * Post a message to the markdown extension\n\t */\n\tpostMessage(type: string, body: object): void;\n}\n\nexport const createPosterForVsCode = (vscode: any) => {\n\treturn new class implements MessagePoster {\n\t\tpostMessage(type: string, body: object): void {\n\t\t\tvscode.postMessage({\n\t\t\t\ttype,\n\t\t\t\tsource: getSettings().source,\n\t\t\t\tbody\n\t\t\t});\n\t\t}\n\t};\n};\n\n","/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\n\nimport { getSettings } from './settings';\n\n\nfunction clamp(min: number, max: number, value: number) {\n\treturn Math.min(max, Math.max(min, value));\n}\n\nfunction clampLine(line: number) {\n\treturn clamp(0, getSettings().lineCount - 1, line);\n}\n\n\nexport interface CodeLineElement {\n\telement: HTMLElement;\n\tline: number;\n}\n\nconst getCodeLineElements = (() => {\n\tlet elements: CodeLineElement[];\n\treturn () => {\n\t\tif (!elements) {\n\t\t\telements = [{ element: document.body, line: 0 }];\n\t\t\tfor (const element of document.getElementsByClassName('code-line')) {\n\t\t\t\tconst line = +element.getAttribute('data-line')!;\n\t\t\t\tif (!isNaN(line)) {\n\t\t\t\t\telements.push({ element: element as HTMLElement, line });\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\treturn elements;\n\t};\n})();\n\n/**\n * Find the html elements that map to a specific target line in the editor.\n *\n * If an exact match, returns a single element. If the line is between elements,\n * returns the element prior to and the element after the given line.\n */\nexport function getElementsForSourceLine(targetLine: number): { previous: CodeLineElement; next?: CodeLineElement; } {\n\tconst lineNumber = Math.floor(targetLine);\n\tconst lines = getCodeLineElements();\n\tlet previous = lines[0] || null;\n\tfor (const entry of lines) {\n\t\tif (entry.line === lineNumber) {\n\t\t\treturn { previous: entry, next: undefined };\n\t\t} else if (entry.line > lineNumber) {\n\t\t\treturn { previous, next: entry };\n\t\t}\n\t\tprevious = entry;\n\t}\n\treturn { previous };\n}\n\n/**\n * Find the html elements that are at a specific pixel offset on the page.\n */\nexport function getLineElementsAtPageOffset(offset: number): { previous: CodeLineElement; next?: CodeLineElement; } {\n\tconst lines = getCodeLineElements();\n\tconst position = offset - window.scrollY;\n\tlet lo = -1;\n\tlet hi = lines.length - 1;\n\twhile (lo + 1 < hi) {\n\t\tconst mid = Math.floor((lo + hi) / 2);\n\t\tconst bounds = lines[mid].element.getBoundingClientRect();\n\t\tif (bounds.top + bounds.height >= position) {\n\t\t\thi = mid;\n\t\t}\n\t\telse {\n\t\t\tlo = mid;\n\t\t}\n\t}\n\tconst hiElement = lines[hi];\n\tconst hiBounds = hiElement.element.getBoundingClientRect();\n\tif (hi >= 1 && hiBounds.top > position) {\n\t\tconst loElement = lines[lo];\n\t\treturn { previous: loElement, next: hiElement };\n\t}\n\treturn { previous: hiElement };\n}\n\n/**\n * Attempt to reveal the element for a source line in the editor.\n */\nexport function scrollToRevealSourceLine(line: number) {\n\tif (!getSettings().scrollPreviewWithEditor) {\n\t\treturn;\n\t}\n\n\tif (line <= 0) {\n\t\twindow.scroll(window.scrollX, 0);\n\t\treturn;\n\t}\n\n\tconst { previous, next } = getElementsForSourceLine(line);\n\tif (!previous) {\n\t\treturn;\n\t}\n\tlet scrollTo = 0;\n\tconst rect = previous.element.getBoundingClientRect();\n\tconst previousTop = rect.top;\n\tif (next && next.line !== previous.line) {\n\t\t// Between two elements. Go to percentage offset between them.\n\t\tconst betweenProgress = (line - previous.line) / (next.line - previous.line);\n\t\tconst elementOffset = next.element.getBoundingClientRect().top - previousTop;\n\t\tscrollTo = previousTop + betweenProgress * elementOffset;\n\t} else {\n\t\tconst progressInElement = line - Math.floor(line);\n\t\tscrollTo = previousTop + (rect.height * progressInElement);\n\t}\n\twindow.scroll(window.scrollX, Math.max(1, window.scrollY + scrollTo));\n}\n\nexport function getEditorLineNumberForPageOffset(offset: number) {\n\tconst { previous, next } = getLineElementsAtPageOffset(offset);\n\tif (previous) {\n\t\tconst previousBounds = previous.element.getBoundingClientRect();\n\t\tconst offsetFromPrevious = (offset - window.scrollY - previousBounds.top);\n\t\tif (next) {\n\t\t\tconst progressBetweenElements = offsetFromPrevious / (next.element.getBoundingClientRect().top - previousBounds.top);\n\t\t\tconst line = previous.line + progressBetweenElements * (next.line - previous.line);\n\t\t\treturn clampLine(line);\n\t\t}\n\t\telse {\n\t\t\tconst progressWithinElement = offsetFromPrevious / (previousBounds.height);\n\t\t\tconst line = previous.line + progressWithinElement;\n\t\t\treturn clampLine(line);\n\t\t}\n\t}\n\treturn null;\n}\n","/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\n\nexport interface PreviewSettings {\n\treadonly source: string;\n\treadonly line: number;\n\treadonly lineCount: number;\n\treadonly scrollPreviewWithEditor?: boolean;\n\treadonly scrollEditorWithPreview: boolean;\n\treadonly disableSecurityWarnings: boolean;\n\treadonly doubleClickToSwitchToEditor: boolean;\n\treadonly webviewResourceRoot: string;\n}\n\nlet cachedSettings: PreviewSettings | undefined = undefined;\n\nexport function getData<T = {}>(key: string): T {\n\tconst element = document.getElementById('vscode-markdown-preview-data');\n\tif (element) {\n\t\tconst data = element.getAttribute(key);\n\t\tif (data) {\n\t\t\treturn JSON.parse(data);\n\t\t}\n\t}\n\n\tthrow new Error(`Could not load data for ${key}`);\n}\n\nexport function getSettings(): PreviewSettings {\n\tif (cachedSettings) {\n\t\treturn cachedSettings;\n\t}\n\n\tcachedSettings = getData('data-settings');\n\tif (cachedSettings) {\n\t\treturn cachedSettings;\n\t}\n\n\tthrow new Error('Could not load settings');\n}\n"],"sourceRoot":""}