Commit c51ababba6c344673c910046e4620a08d5bef7e9
2020-08-27T23:51:16
JS Extras: Highlight import and export bindings (#2533)
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diff --git a/components/prism-js-extras.js b/components/prism-js-extras.js
index b2a7fca..552ee59 100644
--- a/components/prism-js-extras.js
+++ b/components/prism-js-extras.js
@@ -32,6 +32,33 @@
]
});
+ /**
+ * Replaces the `<ID>` placeholder in the given pattern with a pattern for general JS identifiers.
+ *
+ * @param {string} source
+ * @param {string} [flags]
+ * @returns {RegExp}
+ */
+ function withId(source, flags) {
+ return RegExp(
+ source.replace(/<ID>/g, function () { return /[_$a-zA-Z\xA0-\uFFFF][$\w\xA0-\uFFFF]*/.source; }),
+ flags);
+ }
+ Prism.languages.insertBefore('javascript', 'keyword', {
+ 'imports': {
+ // https://tc39.es/ecma262/#sec-imports
+ pattern: withId(/(\bimport\b\s*)(?:<ID>(?:\s*,\s*(?:\*\s*as\s+<ID>|\{[^{}]*\}))?|\*\s*as\s+<ID>|\{[^{}]*\})(?=\s*\bfrom\b)/.source),
+ lookbehind: true,
+ inside: Prism.languages.javascript
+ },
+ 'exports': {
+ // https://tc39.es/ecma262/#sec-exports
+ pattern: withId(/(\bexport\b\s*)(?:\*(?:\s*as\s+<ID>)?(?=\s*\bfrom\b)|\{[^{}]*\})/.source),
+ lookbehind: true,
+ inside: Prism.languages.javascript
+ }
+ });
+
Prism.languages.javascript['keyword'].unshift(
{
pattern: /\b(?:as|default|export|from|import)\b/,
@@ -64,7 +91,7 @@
Prism.languages.insertBefore('javascript', 'punctuation', {
'property-access': {
- pattern: /(\.\s*)#?[_$a-zA-Z\xA0-\uFFFF][$\w\xA0-\uFFFF]*/,
+ pattern: withId(/(\.\s*)#?<ID>/.source),
lookbehind: true
},
'maybe-class-name': {
diff --git a/components/prism-js-extras.min.js b/components/prism-js-extras.min.js
index 366f0e2..0505140 100644
--- a/components/prism-js-extras.min.js
+++ b/components/prism-js-extras.min.js
@@ -1 +1 @@
-!function(a){a.languages.insertBefore("javascript","function-variable",{"method-variable":{pattern:RegExp("(\\.\\s*)"+a.languages.javascript["function-variable"].pattern.source),lookbehind:!0,alias:["function-variable","method","function","property-access"]}}),a.languages.insertBefore("javascript","function",{method:{pattern:RegExp("(\\.\\s*)"+a.languages.javascript.function.source),lookbehind:!0,alias:["function","property-access"]}}),a.languages.insertBefore("javascript","constant",{"known-class-name":[{pattern:/\b(?:(?:(?:Uint|Int)(?:8|16|32)|Uint8Clamped|Float(?:32|64))?Array|ArrayBuffer|BigInt|Boolean|DataView|Date|Error|Function|Intl|JSON|Math|Number|Object|Promise|Proxy|Reflect|RegExp|String|Symbol|(?:Weak)?(?:Set|Map)|WebAssembly)\b/,alias:"class-name"},{pattern:/\b(?:[A-Z]\w*)Error\b/,alias:"class-name"}]}),a.languages.javascript.keyword.unshift({pattern:/\b(?:as|default|export|from|import)\b/,alias:"module"},{pattern:/\b(?:await|break|catch|continue|do|else|for|finally|if|return|switch|throw|try|while|yield)\b/,alias:"control-flow"},{pattern:/\bnull\b/,alias:["null","nil"]},{pattern:/\bundefined\b/,alias:"nil"}),a.languages.insertBefore("javascript","operator",{spread:{pattern:/\.{3}/,alias:"operator"},arrow:{pattern:/=>/,alias:"operator"}}),a.languages.insertBefore("javascript","punctuation",{"property-access":{pattern:/(\.\s*)#?[_$a-zA-Z\xA0-\uFFFF][$\w\xA0-\uFFFF]*/,lookbehind:!0},"maybe-class-name":{pattern:/(^|[^$\w\xA0-\uFFFF])[A-Z][$\w\xA0-\uFFFF]+/,lookbehind:!0},dom:{pattern:/\b(?:document|location|navigator|performance|(?:local|session)Storage|window)\b/,alias:"variable"},console:{pattern:/\bconsole(?=\s*\.)/,alias:"class-name"}});for(var e=["function","function-variable","method","method-variable","property-access"],t=0;t<e.length;t++){var n=e[t],r=a.languages.javascript[n];"RegExp"===a.util.type(r)&&(r=a.languages.javascript[n]={pattern:r});var s=r.inside||{};(r.inside=s)["maybe-class-name"]=/^[A-Z][\s\S]*/}}(Prism);
\ No newline at end of file
+!function(a){function e(a,e){return RegExp(a.replace(/<ID>/g,function(){return"[_$a-zA-Z\\xA0-\\uFFFF][$\\w\\xA0-\\uFFFF]*"}),e)}a.languages.insertBefore("javascript","function-variable",{"method-variable":{pattern:RegExp("(\\.\\s*)"+a.languages.javascript["function-variable"].pattern.source),lookbehind:!0,alias:["function-variable","method","function","property-access"]}}),a.languages.insertBefore("javascript","function",{method:{pattern:RegExp("(\\.\\s*)"+a.languages.javascript.function.source),lookbehind:!0,alias:["function","property-access"]}}),a.languages.insertBefore("javascript","constant",{"known-class-name":[{pattern:/\b(?:(?:(?:Uint|Int)(?:8|16|32)|Uint8Clamped|Float(?:32|64))?Array|ArrayBuffer|BigInt|Boolean|DataView|Date|Error|Function|Intl|JSON|Math|Number|Object|Promise|Proxy|Reflect|RegExp|String|Symbol|(?:Weak)?(?:Set|Map)|WebAssembly)\b/,alias:"class-name"},{pattern:/\b(?:[A-Z]\w*)Error\b/,alias:"class-name"}]}),a.languages.insertBefore("javascript","keyword",{imports:{pattern:e("(\\bimport\\b\\s*)(?:<ID>(?:\\s*,\\s*(?:\\*\\s*as\\s+<ID>|\\{[^{}]*\\}))?|\\*\\s*as\\s+<ID>|\\{[^{}]*\\})(?=\\s*\\bfrom\\b)"),lookbehind:!0,inside:a.languages.javascript},exports:{pattern:e("(\\bexport\\b\\s*)(?:\\*(?:\\s*as\\s+<ID>)?(?=\\s*\\bfrom\\b)|\\{[^{}]*\\})"),lookbehind:!0,inside:a.languages.javascript}}),a.languages.javascript.keyword.unshift({pattern:/\b(?:as|default|export|from|import)\b/,alias:"module"},{pattern:/\b(?:await|break|catch|continue|do|else|for|finally|if|return|switch|throw|try|while|yield)\b/,alias:"control-flow"},{pattern:/\bnull\b/,alias:["null","nil"]},{pattern:/\bundefined\b/,alias:"nil"}),a.languages.insertBefore("javascript","operator",{spread:{pattern:/\.{3}/,alias:"operator"},arrow:{pattern:/=>/,alias:"operator"}}),a.languages.insertBefore("javascript","punctuation",{"property-access":{pattern:e("(\\.\\s*)#?<ID>"),lookbehind:!0},"maybe-class-name":{pattern:/(^|[^$\w\xA0-\uFFFF])[A-Z][$\w\xA0-\uFFFF]+/,lookbehind:!0},dom:{pattern:/\b(?:document|location|navigator|performance|(?:local|session)Storage|window)\b/,alias:"variable"},console:{pattern:/\bconsole(?=\s*\.)/,alias:"class-name"}});for(var t=["function","function-variable","method","method-variable","property-access"],r=0;r<t.length;r++){var n=t[r],s=a.languages.javascript[n];"RegExp"===a.util.type(s)&&(s=a.languages.javascript[n]={pattern:s});var o=s.inside||{};(s.inside=o)["maybe-class-name"]=/^[A-Z][\s\S]*/}}(Prism);
\ No newline at end of file
diff --git a/tests/languages/javascript!+js-extras/exports_feature.test b/tests/languages/javascript!+js-extras/exports_feature.test
new file mode 100644
index 0000000..67b7647
--- /dev/null
+++ b/tests/languages/javascript!+js-extras/exports_feature.test
@@ -0,0 +1,151 @@
+export * from "mod";
+export * as Foo from "mod";
+export {} from "mod";
+export {x} from "mod";
+export {d} from "mod";
+export {d,} from "mod";
+export {d as Foo, b as Bar} from "mod";
+export {d as Foo, b as Bar,} from "mod";
+export {}
+export {x}
+export {d}
+export {d,}
+export {d as Foo, b as Bar}
+export {d as Foo, b as Bar,}
+
+----------------------------------------------------
+
+[
+ ["keyword", "export"],
+ ["exports", [
+ ["operator", "*"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["operator", "*"],
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "x",
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d",
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d",
+ ["punctuation", ","],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ " b ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ " b ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", ","],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "x",
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d",
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d",
+ ["punctuation", ","],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ " b ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "export"],
+ ["exports", [
+ ["punctuation", "{"],
+ "d ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ " b ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", ","],
+ ["punctuation", "}"]
+ ]]
+]
\ No newline at end of file
diff --git a/tests/languages/javascript!+js-extras/imports_feature.test b/tests/languages/javascript!+js-extras/imports_feature.test
new file mode 100644
index 0000000..6e69c6f
--- /dev/null
+++ b/tests/languages/javascript!+js-extras/imports_feature.test
@@ -0,0 +1,124 @@
+import React from 'react';
+import x from "mod";
+import * as Foo from "mod";
+import {} from "mod";
+import {d} from "mod";
+import {d,} from "mod";
+import {d as Foo, b as Bar} from "mod";
+import {d as Foo, b as Bar,} from "mod";
+import Foo, { Bar } from "mod";
+import Foo, * as Bar from "mod";
+
+import "mod";
+
+----------------------------------------------------
+
+[
+ ["keyword", "import"],
+ ["imports", [
+ ["maybe-class-name", "React"]
+ ]],
+ ["keyword", "from"],
+ ["string", "'react'"],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ "x"
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["operator", "*"],
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["punctuation", "{"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["punctuation", "{"],
+ "d",
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["punctuation", "{"],
+ "d",
+ ["punctuation", ","],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["punctuation", "{"],
+ "d ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ " b ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["punctuation", "{"],
+ "d ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ " b ",
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", ","],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ ["punctuation", "{"],
+ ["maybe-class-name", "Bar"],
+ ["punctuation", "}"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+ ["keyword", "import"],
+ ["imports", [
+ ["maybe-class-name", "Foo"],
+ ["punctuation", ","],
+ ["operator", "*"],
+ ["keyword", "as"],
+ ["maybe-class-name", "Bar"]
+ ]],
+ ["keyword", "from"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"],
+
+ ["keyword", "import"],
+ ["string", "\"mod\""],
+ ["punctuation", ";"]
+]
\ No newline at end of file