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use let/const in javascript #199

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May 3, 2024
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use let/const in javascript #199

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56 changes: 28 additions & 28 deletions preview/_/js/previm.js.tmpl
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
'use strict';

(function(_doc, _win) {
var REFRESH_INTERVAL = 1000;
var md = new _win.markdownit({html: true, linkify: true})
const REFRESH_INTERVAL = 1000;
const md = new _win.markdownit({html: true, linkify: true})
.use(_win.markdownitAbbr)
.use(_win.markdownitDeflist)
.use(_win.markdownitFootnote)
Expand All @@ -11,19 +11,19 @@
.use(_win.markdownitCheckbox)
.use(_win.markdownitCjkBreaks);

var defaultRenderer =
const defaultRenderer =
md.renderer.rules.link_open ||
function (tokens, idx, options, env, self) {
function (tokens, idx, options, _env, self) {
return self.renderToken(tokens, idx, options);
};

md.renderer.rules.link_open = function (tokens, idx, options, env, self) {
var targetIndex = tokens[idx].attrIndex("target");
const targetIndex = tokens[idx].attrIndex("target");
if (targetIndex < 0) {
if (!/^#/.test(tokens[idx].attrs[0][1])) {
tokens[idx].attrPush(["target", "_blank"]);

var relIndex = tokens[idx].attrIndex("rel");
const relIndex = tokens[idx].attrIndex("rel");
if (relIndex < 0) {
tokens[idx].attrPush(["rel", "noopener"]);
} else {
Expand All @@ -36,18 +36,18 @@
}

// Override default 'fence' ruler for 'mermaid' support
var original_fence = md.renderer.rules.fence;
const original_fence = md.renderer.rules.fence;
md.renderer.rules.fence = function fence(tokens, idx, options, env, slf) {
var token = tokens[idx];
var langName = token.info.trim().split(/\s+/g)[0];
const token = tokens[idx];
const langName = token.info.trim().split(/\s+/g)[0];
if (langName === 'mermaid') {
return '<div class="mermaid">' + token.content + '</div>';
}
// Settings code-lang
var sep = new RegExp(getOptions().codeLanguageSeparator);
var tokenSplit = token.info.trim().split(sep);
var langName = tokenSplit[0];
var fileName = '';
const sep = new RegExp(getOptions().codeLanguageSeparator);
const tokenSplit = token.info.trim().split(sep);
const langName = tokenSplit[0];
const fileName = '';
if (tokenSplit.length > 1) {
fileName = tokenSplit.slice(1).join(' ');
} else {
Expand Down Expand Up @@ -77,16 +77,16 @@
}
return md.render(content);
} else if(hasTargetFileType(filetype, ['plantuml'])) {
var lines = content.split("\n")
var chunks = [];
const lines = content.split("\n")
const chunks = [];
lines.forEach(function (line) {
if (/^@start/.test(line)) {
chunks.push(line);
} else if (chunks.length !== 0) {
chunks[chunks.length - 1] += "\n" + line;
}
});
var plantumls = [];
const plantumls = [];
chunks.forEach(function (chunk) {
plantumls.push("```plantuml\n" + chunk + "```\n");
});
Expand All @@ -96,7 +96,7 @@
} else if(hasTargetFileType(filetype, ['rst'])) {
// It has already been converted by rst2html.py
return content
.replace(/<!--\s*plantuml\n([\s\S]*?)-->/g, function(all, c) {
.replace(/<!--\s*plantuml\n([\s\S]*?)-->/g, function(_all, c) {
return '<div><code class="language-plantuml">\n' + c.replace("- ->", "--&#62;").replace('<- -', '&#60;--') + '\n</code></div>';
});
} else if(hasTargetFileType(filetype, ['textile'])) {
Expand All @@ -108,8 +108,8 @@
}

function hasTargetFileType(filetype, targetList) {
var ftlist = filetype.split('.');
for(var i=0;i<ftlist.length; i++) {
const ftlist = filetype.split('.');
for(let i=0;i<ftlist.length; i++) {
if(targetList.indexOf(ftlist[i]) > -1){
return true;
}
Expand All @@ -121,8 +121,8 @@
// ここで動的にpageYOffsetを取得すると画像表示前の高さになってしまう
// そのため明示的にpageYOffsetを受け取るようにしている
function autoScroll(id, pageYOffset) {
var relaxed = 0.95;
var obj = document.getElementById(id);
const relaxed = 0.95;
const obj = document.getElementById(id);
if((_doc.documentElement.clientHeight + pageYOffset) / _doc.body.clientHeight > relaxed) {
obj.scrollTop = obj.scrollHeight;
} else {
Expand All @@ -132,13 +132,13 @@

function style_header() {
if (typeof getOptions === 'function') {
var style = getOptions().showheader ? '' : 'none';
const style = getOptions().showheader ? '' : 'none';
_doc.getElementById('header').style.display = style;
}
}

function loadPreview() {
var needReload = false;
const needReload = false;
// These functions are defined as the file generated dynamically.
// generator-file: preview/autoload/previm.vim
// generated-file: preview/js/previm-function.js
Expand All @@ -161,7 +161,7 @@
if (needReload && (typeof getContent === 'function') && (typeof getFileType === 'function')) {
{{previm_init_libraries}}

var beforePageYOffset = _win.pageYOffset;
const beforePageYOffset = _win.pageYOffset;
_doc.getElementById('preview').innerHTML = transform(getFileType(), getContent());

{{previm_load_libraries}}
Expand All @@ -171,9 +171,9 @@
// Settings code-lang
if (getOptions().showCodeLanguage === 1) {
Array.prototype.forEach.call(_doc.querySelectorAll('pre code'), function (item, index) {
var fileName = item.getAttribute('code-lang');
const fileName = item.getAttribute('code-lang');
if (fileName) {
var codeLang = _doc.createElement('div');
const codeLang = _doc.createElement('div');
codeLang.setAttribute('class','code-lang');
codeLang.innerHTML = '<span class="bold">' + fileName + '</span>';
item.parentNode.insertBefore(codeLang, item.parentNode.firstElementChild);
Expand All @@ -186,8 +186,8 @@
}
}

var interval = _win.setInterval(function() {
var script = _doc.createElement('script');
const interval = _win.setInterval(function() {
const script = _doc.createElement('script');

script.type = 'text/javascript';
script.src = 'js/previm-function.js?t=' + new Date().getTime();
Expand Down