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Prism.languages.javascript = Prism.languages.extend('clike', {
'class-name': [
Prism.languages.clike['class-name'],
{
pattern:
/(^|[^$\w\xA0-\uFFFF])(?!\s)[_$A-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\.(?:constructor|prototype))/,
lookbehind: true,
},
],
keyword: [
{
pattern: /((?:^|\})\s*)catch\b/,
lookbehind: true,
},
{
pattern:
/(^|[^.]|\.\.\.\s*)\b(?:as|assert(?=\s*\{)|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally(?=\s*(?:\{|$))|for|from(?=\s*(?:['"]|$))|function|(?:get|set)(?=\s*(?:[#\[$\w\xA0-\uFFFF]|$))|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,
lookbehind: true,
},
],
// Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
function:
/#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*(?:\.\s*(?:apply|bind|call)\s*)?\()/,
number: {
pattern: RegExp(
/(^|[^\w$])/.source +
'(?:' +
// constant
(/NaN|Infinity/.source +
'|' +
// binary integer
/0[bB][01]+(?:_[01]+)*n?/.source +
'|' +
// octal integer
/0[oO][0-7]+(?:_[0-7]+)*n?/.source +
'|' +
// hexadecimal integer
/0[xX][\dA-Fa-f]+(?:_[\dA-Fa-f]+)*n?/.source +
'|' +
// decimal bigint
/\d+(?:_\d+)*n/.source +
'|' +
// decimal number (integer or float) but no bigint
/(?:\d+(?:_\d+)*(?:\.(?:\d+(?:_\d+)*)?)?|\.\d+(?:_\d+)*)(?:[Ee][+-]?\d+(?:_\d+)*)?/
.source) +
')' +
/(?![\w$])/.source
),
lookbehind: true,
},
operator:
/--|\+\+|\*\*=?|=>|&&=?|\|\|=?|[!=]==|<<=?|>>>?=?|[-+*/%&|^!=<>]=?|\.{3}|\?\?=?|\?\.?|[~:]/,
});
Prism.languages.javascript['class-name'][0].pattern =
/(\b(?:class|extends|implements|instanceof|interface|new)\s+)[\w.\\]+/;
Prism.languages.insertBefore('javascript', 'keyword', {
regex: {
// eslint-disable-next-line regexp/no-dupe-characters-character-class
pattern:
/((?:^|[^$\w\xA0-\uFFFF."'\])\s]|\b(?:return|yield))\s*)\/(?:\[(?:[^\]\\\r\n]|\\.)*\]|\\.|[^/\\\[\r\n])+\/[dgimyus]{0,7}(?=(?:\s|\/\*(?:[^*]|\*(?!\/))*\*\/)*(?:$|[\r\n,.;:})\]]|\/\/))/,
lookbehind: true,
greedy: true,
inside: {
'regex-source': {
pattern: /^(\/)[\s\S]+(?=\/[a-z]*$)/,
lookbehind: true,
alias: 'language-regex',
inside: Prism.languages.regex,
},
'regex-delimiter': /^\/|\/$/,
'regex-flags': /^[a-z]+$/,
},
},
// This must be declared before keyword because we use "function" inside the look-forward
'function-variable': {
pattern:
/#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*[=:]\s*(?:async\s*)?(?:\bfunction\b|(?:\((?:[^()]|\([^()]*\))*\)|(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)\s*=>))/,
alias: 'function',
},
parameter: [
{
pattern:
/(function(?:\s+(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)?\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\))/,
lookbehind: true,
inside: Prism.languages.javascript,
},
{
pattern:
/(^|[^$\w\xA0-\uFFFF])(?!\s)[_$a-z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*=>)/i,
lookbehind: true,
inside: Prism.languages.javascript,
},
{
pattern:
/(\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*=>)/,
lookbehind: true,
inside: Prism.languages.javascript,
},
{
pattern:
/((?:\b|\s|^)(?!(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)(?![$\w\xA0-\uFFFF]))(?:(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*\s*)\(\s*|\]\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*\{)/,
lookbehind: true,
inside: Prism.languages.javascript,
},
],
constant: /\b[A-Z](?:[A-Z_]|\dx?)*\b/,
});
Prism.languages.insertBefore('javascript', 'string', {
hashbang: {
pattern: /^#!.*/,
greedy: true,
alias: 'comment',
},
'template-string': {
pattern:
/`(?:\\[\s\S]|\$\{(?:[^{}]|\{(?:[^{}]|\{[^}]*\})*\})+\}|(?!\$\{)[^\\`])*`/,
greedy: true,
inside: {
'template-punctuation': {
pattern: /^`|`$/,
alias: 'string',
},
interpolation: {
pattern:
/((?:^|[^\\])(?:\\{2})*)\$\{(?:[^{}]|\{(?:[^{}]|\{[^}]*\})*\})+\}/,
lookbehind: true,
inside: {
'interpolation-punctuation': {
pattern: /^\$\{|\}$/,
alias: 'punctuation',
},
rest: Prism.languages.javascript,
},
},
string: /[\s\S]+/,
},
},
'string-property': {
pattern:
/((?:^|[,{])[ \t]*)(["'])(?:\\(?:\r\n|[\s\S])|(?!\2)[^\\\r\n])*\2(?=\s*:)/m,
lookbehind: true,
greedy: true,
alias: 'property',
},
});
Prism.languages.insertBefore('javascript', 'operator', {
'literal-property': {
pattern:
/((?:^|[,{])[ \t]*)(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*:)/m,
lookbehind: true,
alias: 'property',
},
});
if (Prism.languages.markup) {
Prism.languages.markup.tag.addInlined('script', 'javascript');
// add attribute support for all DOM events.
// https://developer.mozilla.org/en-US/docs/Web/Events#Standard_events
Prism.languages.markup.tag.addAttribute(
/on(?:abort|blur|change|click|composition(?:end|start|update)|dblclick|error|focus(?:in|out)?|key(?:down|up)|load|mouse(?:down|enter|leave|move|out|over|up)|reset|resize|scroll|select|slotchange|submit|unload|wheel)/
.source,
'javascript'
);
}
Prism.languages.js = Prism.languages.javascript;
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