Feature/reference same file components

packages/example/app/Input.tsx

@@ -20,10 +20,17 @@ const PasswordInput = styled(Input).attrs({
   border: 2px solid #167f8d;
 `;
 
-const Centered = styled.div`
+const Wrapper = styled.div`
   display: flex;
   flex-direction: column;
   align-items: center;
+  transition: background-color 0.5s ease-in-out;
+  &:has(
+      ${Input}:where(:hover, :focus),
+      ${PasswordInput}:where(:hover, :focus)
+    ) {
+    background-color: #4c4c4cb9;
+  }
 `;
 
 const Headline = styled.h2`
@@ -49,12 +56,12 @@ const Headline = styled.h2`
 
 export const Inputs = () => {
   return (
-    <Centered>
+    <Wrapper>
       <Headline>Styled Inputs</Headline>
       <Input placeholder="A small text input" />
       <Input $size="2rem" placeholder="A large text input" />
       <PasswordInput placeholder="A password input" />
       <PasswordInput $size="2rem" placeholder="A large password input" />
-    </Centered>
+    </Wrapper>
   );
 };

packages/next-yak/dist/index.cjs

@@ -1,2 +1,2 @@
-"use strict";var b=Object.create;var l=Object.defineProperty;var h=Object.getOwnPropertyDescriptor;var N=Object.getOwnPropertyNames;var F=Object.getPrototypeOf,w=Object.prototype.hasOwnProperty;var O=(t,e)=>{for(var s in e)l(t,s,{get:e[s],enumerable:!0})},f=(t,e,s,o)=>{if(e&&typeof e=="object"||typeof e=="function")for(let n of N(e))!w.call(t,n)&&n!==s&&l(t,n,{get:()=>e[n],enumerable:!(o=h(e,n))||o.enumerable});return t};var R=(t,e,s)=>(s=t!=null?b(F(t)):{},f(e||!t||!t.__esModule?l(s,"default",{value:t,enumerable:!0}):s,t)),j=t=>f(l({},"__esModule",{value:!0}),t);var X={};O(X,{YakThemeProvider:()=>u.YakThemeProvider,atoms:()=>C,css:()=>y,keyframes:()=>I,styled:()=>k,useTheme:()=>u.useTheme});module.exports=j(X);var v=(...t)=>{let e=[],s=[],o={};for(let n of t)if(typeof n=="string")e.push(n);else if(typeof n=="function")s.push(n);else if(typeof n=="object"&&"style"in n)for(let r in n.style){let a=n.style[r];typeof a=="function"?s.push(i=>({style:{[r]:String(g(i,a))}})):o[r]=a}if(s.length===0){let n=e.join(" ");return()=>({className:n,style:o})}return n=>{let r=[...e],a={...o};for(let i=0;i<s.length;i++)E(n,s[i],r,a);return{className:r.join(" "),style:a}}},E=(t,e,s,o)=>{let n=e(t);for(;n;){if(typeof n=="function"){n=n(t);continue}else if(typeof n=="object"&&("className"in n&&n.className&&s.push(n.className),"style"in n&&n.style))for(let r in n.style)o[r]=n.style[r];break}},g=(t,e)=>{let s=e(t);if(typeof s=="function")return g(t,s);if(process.env.NODE_ENV==="development"&&typeof s!="string"&&typeof s!="number"&&!(s instanceof String))throw new Error(`Dynamic CSS functions must return a string or number but returned ${JSON.stringify(s)}`);return s},y=v;var p=R(require("react"),1),P=require("next-yak/context"),B=t=>Object.assign(p.default.forwardRef(t),{component:t}),M=t=>Object.assign(d(t),{attrs:e=>d(t,e)}),d=(t,e)=>(s,...o)=>{let n=y(s,...o),r=i=>J(i,typeof e=="function"?e(i):e);return B((i,S)=>{let c=r(Object.assign(e||n.length?{theme:(0,P.useTheme)()}:{},i)),m=n(c),T=typeof t=="string"?Y(c):c;return T.className=x(c.className,m.className),T.style="style"in c?{...c.style,...m.style}:m.style,typeof t!="string"&&"yak"in t?t.yak(T,S):(T.ref=S,p.default.createElement(t,{...T}))})},k=new Proxy(M,{get(t,e){return t(e)}});function Y(t){let e={};for(let s in t)!s.startsWith("$")&&s!=="theme"&&(e[s]=t[s]);return e}var x=(t,e)=>t?e?t+" "+e:t:e,A=t=>{let e={};for(let s in t)t[s]!==void 0&&(e[s]=t[s]);return e},J=(t,e)=>e?{..."$__attrs"in t?{...A(e),...t}:{...t,...A(e)},className:x(t.className,e.className),style:{...t.style||{},...e.style||{}},$__attrs:!0}:t;var C=(...t)=>{let e=t.join(" ");return()=>({className:e})};var I=(t,...e)=>t;var u=require("next-yak/context");0&&(module.exports={YakThemeProvider,atoms,css,keyframes,styled,useTheme});
+"use strict";var b=Object.create;var l=Object.defineProperty;var h=Object.getOwnPropertyDescriptor;var N=Object.getOwnPropertyNames;var F=Object.getPrototypeOf,w=Object.prototype.hasOwnProperty;var O=(t,e)=>{for(var s in e)l(t,s,{get:e[s],enumerable:!0})},f=(t,e,s,o)=>{if(e&&typeof e=="object"||typeof e=="function")for(let n of N(e))!w.call(t,n)&&n!==s&&l(t,n,{get:()=>e[n],enumerable:!(o=h(e,n))||o.enumerable});return t};var R=(t,e,s)=>(s=t!=null?b(F(t)):{},f(e||!t||!t.__esModule?l(s,"default",{value:t,enumerable:!0}):s,t)),j=t=>f(l({},"__esModule",{value:!0}),t);var J={};O(J,{YakThemeProvider:()=>u.YakThemeProvider,atoms:()=>C,css:()=>y,keyframes:()=>I,styled:()=>k,useTheme:()=>u.useTheme});module.exports=j(J);var v=(...t)=>{let e=[],s=[],o={};for(let n of t)if(typeof n=="string")e.push(n);else if(typeof n=="function")s.push(n);else if(typeof n=="object"&&"style"in n)for(let r in n.style){let a=n.style[r];typeof a=="function"?s.push(i=>({style:{[r]:String(g(i,a))}})):o[r]=a}if(s.length===0){let n=e.join(" ");return()=>({className:n,style:o})}return n=>{let r=[...e],a={...o};for(let i=0;i<s.length;i++)E(n,s[i],r,a);return{className:r.join(" "),style:a}}},E=(t,e,s,o)=>{let n=e(t);for(;n;){if(typeof n=="function"){n=n(t);continue}else if(typeof n=="object"&&("className"in n&&n.className&&s.push(n.className),"style"in n&&n.style))for(let r in n.style)o[r]=n.style[r];break}},g=(t,e)=>{let s=e(t);if(typeof s=="function")return g(t,s);if(process.env.NODE_ENV==="development"&&typeof s!="string"&&typeof s!="number"&&!(s instanceof String))throw new Error(`Dynamic CSS functions must return a string or number but returned ${JSON.stringify(s)}`);return s},y=v;var p=R(require("react"),1),P=require("next-yak/context"),_=t=>Object.assign(p.default.forwardRef(t),{component:t}),B=t=>Object.assign(d(t),{attrs:e=>d(t,e)}),d=(t,e)=>(s,...o)=>{let n=y(s,...o),r=i=>Y(i,typeof e=="function"?e(i):e);return _((i,S)=>{let c=r(Object.assign(e||n.length?{theme:(0,P.useTheme)()}:{},i)),m=n(c),T=typeof t=="string"?M(c):c;return T.className=x(c.className,m.className),T.style="style"in c?{...c.style,...m.style}:m.style,typeof t!="string"&&"yak"in t?t.yak(T,S):(T.ref=S,p.default.createElement(t,{...T}))})},k=new Proxy(B,{get(t,e){return t(e)}});function M(t){let e={};for(let s in t)!s.startsWith("$")&&s!=="theme"&&(e[s]=t[s]);return e}var x=(t,e)=>t?e?t+" "+e:t:e,A=t=>{let e={};for(let s in t)t[s]!==void 0&&(e[s]=t[s]);return e},Y=(t,e)=>e?{..."$__attrs"in t?{...A(e),...t}:{...t,...A(e)},className:x(t.className,e.className),style:{...t.style||{},...e.style||{}},$__attrs:!0}:t;var C=(...t)=>{let e=t.join(" ");return()=>({className:e})};var I=(t,...e)=>t;var u=require("next-yak/context");0&&(module.exports={YakThemeProvider,atoms,css,keyframes,styled,useTheme});
 //# sourceMappingURL=index.cjs.map

packages/next-yak/dist/index.d.cts

@@ -6,7 +6,9 @@ type ComponentStyles<TProps = {}> = (props: TProps) => {
         [key: string]: string;
     };
 };
-type CSSInterpolation<TProps = {}> = string | number | undefined | null | false | ComponentStyles<TProps> | ((props: TProps) => CSSInterpolation<TProps>);
+type CSSInterpolation<TProps = {}> = string | number | undefined | null | false | ComponentStyles<TProps> | {
+    __yak: true;
+} | ((props: TProps) => CSSInterpolation<TProps>);
 type CSSFunction = <TProps = {}>(styles: TemplateStringsArray, ...values: CSSInterpolation<TProps & {
     theme: YakTheme;
 }>[]) => ComponentStyles<TProps>;
@@ -51,7 +53,9 @@ type Attrs<TBaseProps, TIn extends object = {}, TOut extends AttrsMerged<TBasePr
  */
 type StyledLiteral<T> = <TCSSProps extends Record<string, unknown> = {}>(styles: TemplateStringsArray, ...values: Array<CSSInterpolation<T & TCSSProps & {
     theme: YakTheme;
-}>>) => FunctionComponent<TCSSProps & T>;
+}>>) => FunctionComponent<TCSSProps & T> & {
+    __yak: true;
+};
 /**
  * The `styled` method works perfectly on all of your own or any third-party component,
  * as long as they attach the passed className prop to a DOM element.
@@ -67,10 +71,14 @@ type StyledLiteral<T> = <TCSSProps extends Record<string, unknown> = {}>(styles:
  */
 declare const styled: (<T>(Component: keyof JSX.IntrinsicElements | FunctionComponent<T>) => (<TCSSProps extends Record<string, unknown> = {}>(styles: TemplateStringsArray, ...values: CSSInterpolation<T & TCSSProps & {
     theme: YakTheme;
-}>[]) => FunctionComponent<FastOmit<TCSSProps & T, never>>) & {
+}>[]) => FunctionComponent<FastOmit<TCSSProps & T, never>> & {
+    __yak: true;
+}) & {
     attrs: <TAttrsIn extends object = {}, TAttrsOut extends AttrsMerged<T, TAttrsIn> = AttrsMerged<T, TAttrsIn>>(attrs: Attrs<T, TAttrsIn, TAttrsOut>) => <TCSSProps_1 extends Record<string, unknown> = {}>(styles: TemplateStringsArray, ...values: CSSInterpolation<T & TCSSProps_1 & {
         theme: YakTheme;
-    }>[]) => FunctionComponent<Substitute<TCSSProps_1 & T, TAttrsIn>>;
+    }>[]) => FunctionComponent<Substitute<TCSSProps_1 & T, TAttrsIn>> & {
+        __yak: true;
+    };
 }) & {
     symbol: StyledLiteral<React.SVGProps<SVGSymbolElement>> & {
         attrs: <TAttrsIn_1 extends object = {}, TAttrsOut_1 extends AttrsMerged<React.SVGProps<SVGSymbolElement>, TAttrsIn_1> = AttrsMerged<React.SVGProps<SVGSymbolElement>, TAttrsIn_1>>(attrs: Attrs<React.SVGProps<SVGSymbolElement>, TAttrsIn_1, TAttrsOut_1>) => StyledLiteral<Substitute<React.SVGProps<SVGSymbolElement>, TAttrsIn_1>>;

packages/next-yak/dist/index.d.ts

@@ -6,7 +6,9 @@ type ComponentStyles<TProps = {}> = (props: TProps) => {
         [key: string]: string;
     };
 };
-type CSSInterpolation<TProps = {}> = string | number | undefined | null | false | ComponentStyles<TProps> | ((props: TProps) => CSSInterpolation<TProps>);
+type CSSInterpolation<TProps = {}> = string | number | undefined | null | false | ComponentStyles<TProps> | {
+    __yak: true;
+} | ((props: TProps) => CSSInterpolation<TProps>);
 type CSSFunction = <TProps = {}>(styles: TemplateStringsArray, ...values: CSSInterpolation<TProps & {
     theme: YakTheme;
 }>[]) => ComponentStyles<TProps>;
@@ -51,7 +53,9 @@ type Attrs<TBaseProps, TIn extends object = {}, TOut extends AttrsMerged<TBasePr
  */
 type StyledLiteral<T> = <TCSSProps extends Record<string, unknown> = {}>(styles: TemplateStringsArray, ...values: Array<CSSInterpolation<T & TCSSProps & {
     theme: YakTheme;
-}>>) => FunctionComponent<TCSSProps & T>;
+}>>) => FunctionComponent<TCSSProps & T> & {
+    __yak: true;
+};
 /**
  * The `styled` method works perfectly on all of your own or any third-party component,
  * as long as they attach the passed className prop to a DOM element.
@@ -67,10 +71,14 @@ type StyledLiteral<T> = <TCSSProps extends Record<string, unknown> = {}>(styles:
  */
 declare const styled: (<T>(Component: keyof JSX.IntrinsicElements | FunctionComponent<T>) => (<TCSSProps extends Record<string, unknown> = {}>(styles: TemplateStringsArray, ...values: CSSInterpolation<T & TCSSProps & {
     theme: YakTheme;
-}>[]) => FunctionComponent<FastOmit<TCSSProps & T, never>>) & {
+}>[]) => FunctionComponent<FastOmit<TCSSProps & T, never>> & {
+    __yak: true;
+}) & {
     attrs: <TAttrsIn extends object = {}, TAttrsOut extends AttrsMerged<T, TAttrsIn> = AttrsMerged<T, TAttrsIn>>(attrs: Attrs<T, TAttrsIn, TAttrsOut>) => <TCSSProps_1 extends Record<string, unknown> = {}>(styles: TemplateStringsArray, ...values: CSSInterpolation<T & TCSSProps_1 & {
         theme: YakTheme;
-    }>[]) => FunctionComponent<Substitute<TCSSProps_1 & T, TAttrsIn>>;
+    }>[]) => FunctionComponent<Substitute<TCSSProps_1 & T, TAttrsIn>> & {
+        __yak: true;
+    };
 }) & {
     symbol: StyledLiteral<React.SVGProps<SVGSymbolElement>> & {
         attrs: <TAttrsIn_1 extends object = {}, TAttrsOut_1 extends AttrsMerged<React.SVGProps<SVGSymbolElement>, TAttrsIn_1> = AttrsMerged<React.SVGProps<SVGSymbolElement>, TAttrsIn_1>>(attrs: Attrs<React.SVGProps<SVGSymbolElement>, TAttrsIn_1, TAttrsOut_1>) => StyledLiteral<Substitute<React.SVGProps<SVGSymbolElement>, TAttrsIn_1>>;

packages/next-yak/loaders/__tests__/cssloader.test.ts

@@ -193,7 +193,7 @@ const newHeadline = styled(headline).attrs({
       color: red;
      }
 
-    .yak_1 { 
+    .yak_2 { 
       color: black;
        }"
   `);
@@ -361,3 +361,59 @@ const FadeInButton = styled.button\`
    }"
 `);
 });
+
+
+it("should allow to target components", async () => {
+  expect(
+    await cssloader.call(
+      loaderContext,
+      `
+import { styled, keyframes } from "next-yak";
+
+const Link = styled.a\`
+  color: palevioletred;
+\`
+
+const Icon = styled.svg\`
+  fill: currentColor;
+  width: 1em;
+  height: 1em;
+  \${Link}:hover & {
+    color: red;
+  }
+  \${Link}:focus & {
+    color: red;
+  }
+\`
+
+const Wrapper = styled.div\`
+  &:has(> \${Link}) {
+    padding: 10px;
+  }
+\`
+`
+    )
+  ).toMatchInlineSnapshot(`
+    ".yak_0 { 
+      color: palevioletred;
+     }
+
+    .yak_2 { 
+      fill: currentColor;
+      width: 1em;
+      height: 1em;
+      .yak_1:hover & {
+        color: red;
+      }
+      .yak_1:focus & {
+        color: red;
+      }
+     }
+
+    .yak_4 { 
+      &:has(> .yak_1) {
+        padding: 10px;
+      }
+     }"
+  `);
+});

packages/next-yak/loaders/__tests__/tsloader.test.ts

@@ -125,8 +125,8 @@ const FancyButton = styled(Button)\`
       import { styled, css } from \\"next-yak\\";
       import __styleYak from \\"./page.yak.module.css!=!./page?./page.yak.module.css\\";
       const x = Math.random();
-      const Button = styled.button(__styleYak.yak_0, x > 0.5 && css(__styleYak.yak_1));
-      const FancyButton = styled(Button)(__styleYak.yak_2);"
+      const Button = styled.button(__styleYak.yak_0, x > 0.5 && css(__styleYak.yak_2));
+      const FancyButton = styled(Button)(__styleYak.yak_3);"
     `);
   });
 
@@ -163,8 +163,8 @@ const FancyButton = styled(Button)\`
       const x = Math.random();
       const Button = styled.button(__styleYak.yak_0, ({
         theme
-      }) => theme.mode === \\"dark\\" && css(__styleYak.yak_1));
-      const FancyButton = styled(Button)(__styleYak.yak_2);"
+      }) => theme.mode === \\"dark\\" && css(__styleYak.yak_2));
+      const FancyButton = styled(Button)(__styleYak.yak_3);"
     `);
   });
 });
@@ -216,7 +216,7 @@ const newHeadline = styled(headline).attrs({
     const headline = styled.input(__styleYak.yak_0);
     const newHeadline = styled(headline).attrs({
       type: \\"text\\"
-    })(__styleYak.yak_1);"
+    })(__styleYak.yak_2);"
   `);
 });
 
@@ -286,4 +286,45 @@ const FadeInButton = styled.button\`
     }
   });"
 `);
-});
+});
+
+
+it("should allow to target components", async () => {
+  expect(
+    await tsloader.call(
+      loaderContext,
+      `
+import { styled, keyframes } from "next-yak";
+
+const Link = styled.a\`
+  color: palevioletred;
+\`
+
+const Icon = styled.svg\`
+  fill: currentColor;
+  width: 1em;
+  height: 1em;
+  \${Link}:hover & {
+    color: red;
+  }
+  \${Link}:focus & {
+    color: red;
+  }
+\`
+
+const Wrapper = styled.div\`
+  &:has(> \${Link}) {
+    padding: 10px;
+  }
+\`
+
+`
+    )
+  ).toMatchInlineSnapshot(`
+    "import { styled, keyframes } from \\"next-yak\\";
+    import __styleYak from \\"./page.yak.module.css!=!./page?./page.yak.module.css\\";
+    const Link = styled.a(__styleYak.yak_0, __styleYak.yak_1);
+    const Icon = styled.svg(__styleYak.yak_2);
+    const Wrapper = styled.div(__styleYak.yak_4);"
+  `);
+});

packages/next-yak/loaders/babel-yak-plugin.cjs

@@ -4,6 +4,7 @@ const replaceQuasiExpressionTokens = require("./lib/replaceQuasiExpressionTokens
 const murmurhash2_32_gc = require("./lib/hash.cjs");
 const { relative, resolve, basename } = require("path");
 const localIdent = require("./lib/localIdent.cjs");
+const getStyledComponentName = require("./lib/getStyledComponentName.cjs");
 
 /** @typedef {{replaces: Record<string, unknown>, rootContext?: string}} YakBabelPluginOptions */
 
@@ -14,7 +15,7 @@ const localIdent = require("./lib/localIdent.cjs");
  *
  * @param {import("@babel/core")} babel
  * @param {YakBabelPluginOptions} options
- * @returns {babel.PluginObj<import("@babel/core").PluginPass & {localVarNames: {css?: string, styled?: string, keyframes?: string}, isImportedInCurrentFile: boolean, classNameCount: number, varIndex: number}>}
+ * @returns {babel.PluginObj<import("@babel/core").PluginPass & {localVarNames: {css?: string, styled?: string, keyframes?: string}, isImportedInCurrentFile: boolean, classNameCount: number, varIndex: number, variableNameToStyledCall: Map<string, {wasAdded: boolean, className: string, astNode: import("@babel/types").CallExpression}>}>}
  */
 module.exports = function (babel, options) {
   const { replaces } = options;
@@ -36,6 +37,7 @@ module.exports = function (babel, options) {
       this.isImportedInCurrentFile = false;
       this.classNameCount = 0;
       this.varIndex = 0;
+      this.variableNameToStyledCall = new Map();
     },
     visitor: {
       /**
@@ -143,7 +145,28 @@ module.exports = function (babel, options) {
           return;
         }
 
-        replaceQuasiExpressionTokens(path.node.quasi, replaces, t);
+        replaceQuasiExpressionTokens(path.node.quasi, (name) => {
+          if (name in replaces) {
+            return replaces[name];
+          }
+          const styledCall = this.variableNameToStyledCall.get(name);
+          if (styledCall) {
+            const { wasAdded, className, astNode } = styledCall;
+            // on first usage of another styled component, add a
+            // the className to it so it can be targeted
+            if (!wasAdded) {
+              styledCall.wasAdded = true;
+              astNode.arguments.push(
+                t.memberExpression(
+                  t.identifier("__styleYak"),
+                  t.identifier(className)
+                )
+              );
+            }
+            return className;
+          }
+          return false;
+        }, t);
 
         // Keep the same selector for all quasis belonging to the same css block
         const classNameExpression = t.memberExpression(
@@ -246,6 +269,18 @@ module.exports = function (babel, options) {
 
         const styledCall = t.callExpression(tag, [...newArguments]);
         path.replaceWith(styledCall);
+
+        // Store reference to AST node to allow other components to target the styled literal inside css like
+        // e.g. `& ${Button} { ... }`
+        if (isStyledLiteral || isStyledCall || isAttrsCall) {
+          const variableName = getStyledComponentName(path);
+          // TODO: reuse existing class name if possible
+          this.variableNameToStyledCall.set(variableName, {
+            wasAdded: false,
+            className: localIdent(this.classNameCount++, "className"),
+            astNode: styledCall,
+          });
+        }
       },
     },
   };

packages/next-yak/loaders/cssloader.cjs

@@ -4,6 +4,7 @@ const babel = require("@babel/core");
 const quasiClassifier = require("./lib/quasiClassifier.cjs");
 const localIdent = require("./lib/localIdent.cjs");
 const replaceQuasiExpressionTokens = require("./lib/replaceQuasiExpressionTokens.cjs");
+const getStyledComponentName = require("./lib/getStyledComponentName.cjs");
 const murmurhash2_32_gc = require("./lib/hash.cjs");
 const { relative } = require("path");
 
@@ -65,6 +66,9 @@ module.exports = async function cssLoader(source) {
   /** @type {string | null} */
   let hashedFile = null;
 
+  /** @type {Map<string, string>} */
+  const variableNameToStyledClassName = new Map();
+
   /**
    * find all css template literals in ast
    * @type {{ code: string, loc: number }[]}
@@ -151,8 +155,15 @@ module.exports = async function cssLoader(source) {
       ) {
         return;
       }
-
-      replaceQuasiExpressionTokens(path.node.quasi, replaces, t);
+      replaceQuasiExpressionTokens(path.node.quasi, (name) => {
+        if (name in replaces) {
+          return replaces[name];
+        }
+        if (variableNameToStyledClassName.has(name)) {
+          return variableNameToStyledClassName.get(name)
+        }
+        return false;
+      }, t);
 
       // Keep the same selector for all quasis belonging to the same css block
       const literalSelector = localIdent(
@@ -209,6 +220,18 @@ module.exports = async function cssLoader(source) {
           loc: quasi.loc?.start.line || 0,
         });
       }
+
+      // Store reference to AST node to allow other components to target the styled literal inside css like
+      // e.g. `& ${Button} { ... }`
+      if (isStyledLiteral || isStyledCall || isAttrsCall) {
+        const variableName = getStyledComponentName(path);
+        // TODO: reuse existing class name if possible
+        variableNameToStyledClassName.set(variableName, localIdent(
+          index++,
+          "selector"
+        ));
+      }
+
     },
   });