commit 16ad722efa7b33fdab6df3182ceaab8fb2bebf9a · kitten.sh/wonka

+4 -89

rollup.config.js

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       import { terser } from 'rollup-plugin-terser';

     

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       import compiler from '@ampproject/rollup-plugin-closure-compiler';

     

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       import minifyBucklescript from './scripts/minify-bucklescript-plugin';

     

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       const cwd = process.cwd();

     

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       const pkgInfo = require('./package.json');

     

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       const name = basename(pkgInfo.main, '.js');

     
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         },

     

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       });

     

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       const unwrapStatePlugin = ({ types: t }) => ({

     

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         pre() {

     

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           this.props = new Map();

     

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           this.test = (node) =>

     

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             /state$/i.test(node.id.name) ||

     

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             (node.init.properties.length === 1 && node.init.properties[0].key.name === 'contents');

     

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         },

     

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         visitor: {

     

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           VariableDeclarator(path) {

     

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             if (

     

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               t.isIdentifier(path.node.id) &&

     

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               t.isObjectExpression(path.node.init) &&

     

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               path.node.init.properties.every(

     

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                 (prop) => t.isObjectProperty(prop) && t.isIdentifier(prop.key)

     

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               ) &&

     

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               this.test(path.node)

     

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             ) {

     

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               const id = path.node.id.name;

     

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               const properties = path.node.init.properties;

     

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               const propNames = new Set(properties.map((x) => x.key.name));

     

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               const decl = properties.map((prop) => {

     

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                 const key = `${id}$${prop.key.name}`;

     

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                 return t.variableDeclarator(t.identifier(key), prop.value);

     

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               });

     

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               this.props.set(id, propNames);

     

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               path.parentPath.replaceWithMultiple(t.variableDeclaration('let', decl));

     

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             }

     

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           },

     

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           MemberExpression(path) {

     

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             if (

     

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               t.isIdentifier(path.node.object) &&

     

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               this.props.has(path.node.object.name) &&

     

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               t.isIdentifier(path.node.property) &&

     

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               this.props.get(path.node.object.name).has(path.node.property.name)

     

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             ) {

     

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               const id = path.node.object.name;

     

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               const propName = path.node.property.name;

     

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               path.replaceWith(t.identifier(`${id}$${propName}`));

     

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             }

     

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           },

     

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         },

     

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       });

     

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       const curryGuaranteePlugin = ({ types: t }) => {

     

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         const curryFnName = /^_(\d)$/;

     

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         const lengthId = t.identifier('length');

     

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         const bindId = t.identifier('bind');

     

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         return {

     

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           visitor: {

     

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             CallExpression(path) {

     

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               if (

     

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                 !t.isMemberExpression(path.node.callee) ||

     

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                 !t.isIdentifier(path.node.callee.object) ||

     

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                 !t.isIdentifier(path.node.callee.property) ||

     

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                 !path.node.callee.object.name === 'Curry' ||

     

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                 !curryFnName.test(path.node.callee.property.name)

     

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               )

     

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                 return;

     

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               const callFn = path.node.arguments[0];

     

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               const callArgs = path.node.arguments.slice(1);

     

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               if (t.isExpressionStatement(path.parent)) {

     

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                 path.replaceWith(t.callExpression(callFn, callArgs));

     

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                 return;

     

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               }

     

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               const arityLiteral = t.numericLiteral(callArgs.length);

     

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               const argIds = callArgs.map((init) => {

     

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                 if (t.isIdentifier(init)) return init;

     

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                 const id = path.scope.generateUidIdentifierBasedOnNode(path.node.id);

     

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                 path.scope.push({ id, init });

     

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                 return id;

     

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               });

     

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               path.replaceWith(

     

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                 t.conditionalExpression(

     

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                   t.binaryExpression('===', t.memberExpression(callFn, lengthId), arityLiteral),

     

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                   t.callExpression(callFn, argIds),

     

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                   t.callExpression(t.memberExpression(callFn, bindId), [t.nullLiteral()].concat(argIds))

     

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                 )

     

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               );

     

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             },

     

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           },

     

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         };

     

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       };

     

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       const makePlugins = (isProduction) =>

     

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         [

     

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           babel({

     
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             extensions: ['ts', 'tsx', 'js'],

     

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             exclude: 'node_modules/**',

     

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             presets: [],

     

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             plugins: ['babel-plugin-closure-elimination', unwrapStatePlugin, curryGuaranteePlugin],

     

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             plugins: ['babel-plugin-closure-elimination'],

     

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           }),

     

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           minifyBucklescript(),

     

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           compiler({

     

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             formatting: 'PRETTY_PRINT',

     

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             compilation_level: 'SIMPLE_OPTIMIZATIONS',

+122

scripts/minify-bucklescript-plugin.js

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       import { transformSync as transform } from '@babel/core';

     

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       import { createFilter } from 'rollup-pluginutils';

     

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       function unwrapStatePlugin({ types: t }) {

     

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         return {

     

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           pre() {

     

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             this.props = new Map();

     

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             this.test = (node) =>

     

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               /state$/i.test(node.id.name) ||

     

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               (node.init.properties.length === 1 && node.init.properties[0].key.name === 'contents');

     

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           },

     

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           visitor: {

     

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             VariableDeclarator(path) {

     

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               if (

     

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                 t.isIdentifier(path.node.id) &&

     

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                 t.isObjectExpression(path.node.init) &&

     

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                 path.node.init.properties.every(

     

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                   (prop) => t.isObjectProperty(prop) && t.isIdentifier(prop.key)

     

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                 ) &&

     

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                 this.test(path.node)

     

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               ) {

     

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                 const id = path.node.id.name;

     

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                 const properties = path.node.init.properties;

     

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                 const propNames = new Set(properties.map((x) => x.key.name));

     

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                 const decl = properties.map((prop) => {

     

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                   const key = `${id}$${prop.key.name}`;

     

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                   return t.variableDeclarator(t.identifier(key), prop.value);

     

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                 });

     

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                 this.props.set(id, propNames);

     

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                 path.parentPath.replaceWithMultiple(t.variableDeclaration('let', decl));

     

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               }

     

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             },

     

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             MemberExpression(path) {

     

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               if (

     

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                 t.isIdentifier(path.node.object) &&

     

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                 this.props.has(path.node.object.name) &&

     

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                 t.isIdentifier(path.node.property) &&

     

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                 this.props.get(path.node.object.name).has(path.node.property.name)

     

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               ) {

     

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                 const id = path.node.object.name;

     

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                 const propName = path.node.property.name;

     

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                 path.replaceWith(t.identifier(`${id}$${propName}`));

     

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               }

     

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             },

     

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           },

     

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         };

     

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       }

     

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       function curryGuaranteePlugin({ types: t }) {

     

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         const curryFnName = /^_(\d)$/;

     

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         const lengthId = t.identifier('length');

     

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         const bindId = t.identifier('bind');

     

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         return {

     

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           visitor: {

     

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             CallExpression(path) {

     

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               if (!t.isIdentifier(path.node.callee) || !curryFnName.test(path.node.callee.name)) {

     

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                 return;

     

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               }

     

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               const callFn = path.node.arguments[0];

     

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               const callArgs = path.node.arguments.slice(1);

     

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               if (t.isExpressionStatement(path.parent)) {

     

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                 path.replaceWith(t.callExpression(callFn, callArgs));

     

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                 return;

     

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               }

     

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               if (t.isIdentifier(callFn) && path.scope.hasBinding(callFn.name)) {

     

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                 const callFnDefinition = path.scope.getBinding(callFn.name).path.node;

     

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                 if (

     

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                   t.isFunctionDeclaration(callFnDefinition) &&

     

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                   callFnDefinition.params.length === callArgs.length

     

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                 ) {

     

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                   path.replaceWith(t.callExpression(callFn, callArgs));

     

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                   return;

     

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                 }

     

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               }

     

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               const arityLiteral = t.numericLiteral(callArgs.length);

     

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               const argIds = callArgs.map((init) => {

     

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                 if (t.isIdentifier(init)) return init;

     

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                 const id = path.scope.generateUidIdentifierBasedOnNode(path.node.id);

     

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                 path.scope.push({ id, init });

     

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                 return id;

     

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               });

     

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               path.replaceWith(

     

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                 t.conditionalExpression(

     

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                   t.binaryExpression('===', t.memberExpression(callFn, lengthId), arityLiteral),

     

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                   t.callExpression(callFn, argIds),

     

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                   t.callExpression(t.memberExpression(callFn, bindId), [t.nullLiteral()].concat(argIds))

     

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                 )

     

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               );

     

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             },

     

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           },

     

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         };

     

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       }

     

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       function cleanup(opts = {}) {

     

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         const filter = createFilter(opts.include, opts.exclude, {

     

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           resolve: false,

     

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         });

     

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         return {

     

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           name: 'minifyBucklescript',

     

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           renderChunk(code, chunk) {

     

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             if (!filter(chunk.fileName)) {

     

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               return null;

     

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             }

     

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             return transform(code, {

     

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               plugins: [unwrapStatePlugin, curryGuaranteePlugin],

     

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               babelrc: false,

     

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             });

     

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           },

     

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         };

     

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       }

     

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       export default cleanup;