first commit

.gitignore

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+out/
+test/out/
+node_modules
+
+.local
+
+yarn-error.log
+yarn.lock
+
+types/
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port

.npmignore

@@ -0,0 +1,10 @@
+src/
+test/
+modules/
+tsconfig.json
+webpack.config.js
+yarn-error.log
+yarn.lock
+node_modules
+modules/
+.local

LICENSE

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+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
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+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
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+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -0,0 +1,51 @@
+![pupper.js icon](https://i.imgur.com/dAuCn4B.png "pupper.js icon")
+# pupper.js
+pupper.js is a reactive template engine based in pugjs.
+
+This is a BETA project, it can change drastically over time, so use it with caution for now and stay updated! :D
+
+---
+
+# Basic syntax
+pupper.js is based in pugjs, you can learn about pugjs's syntax [here](https://pugjs.org/language/attributes.html).
+
+There's some new syntax added to use the reactivity:
+
+- `{{ variable }}` Renders the contents of `variable` as text, replacing HTML entities with escaped entities.
+- `{- variable -}` Renders the literal content of `variable` as-is
+
+---
+
+# How to use
+You can integrate pupper.js to your application by using one of the given loaders that compiles `.pupper` files into Javascript:
+- [@pupperjs/webpack-loader](https://github.com/pupperjs/webpack-loader)
+
+---
+
+Or, you can integrate using the API:
+```javascript
+const pupper = require("@pupperjs/core");
+const Renderer = pupper.Renderer;
+
+// Compiles the template to a string
+const template = pupper.compileToStringSync(/*pupper*/`
+    .test
+        span.hello-world(id={{ id }})
+            ={- content -}
+`);
+
+// Create a renderer (view) with some starting data
+const renderer = new Renderer(template, {
+    id: "the-id",
+    content: "Hello, beautiful world!"
+});
+
+/**
+ * <div class="test">
+ *      <span class="hello-world" id="the-id">
+ *          Hello, beautiful world!
+ *      </span>
+ * </div> 
+ */
+renderer.renderToString();
+```

modules/webpack/index.js

@@ -0,0 +1,17 @@
+/**
+ * pupper.js - Webpack Loader
+ * @author Matheus Giovani <matheus@ad3com.com.br>
+ * @license AGPL-3.0
+ */
+
+const pupper = require("../../types");
+
+/**
+ * @param {string} source The source filename
+ * @param {import("../../types/pupper").Compiler.Options} options Any options to be passed to the pupper compiler
+ * @returns {String}
+ */
+module.exports = (source, options) => {
+    const contents = pupper.compileToStringSync(source, options);
+    return contents;
+};

modules/webpack/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "@pupperjs/webpack-loader",
+  "version": "1.0.0",
+  "description": "Webpack loader for pupper.js templates",
+  "main": "index.js",
+  "author": "Matheus Giovani <matheus@ad3com.com.br>",
+  "license": "AGPL-3.0"
+}

package.json

@@ -0,0 +1,29 @@
+{
+  "name": "@pupperjs/core",
+  "version": "1.0.0",
+  "description": "A reactive template engine based in pugjs",
+  "main": "out/index.js",
+  "author": "Matheus Giovani <matheus@ad3com.com.br>",
+  "license": "AGPL-3.0",
+  "private": false,
+  "scripts": {
+    "watch": "tsc -w",
+    "test": "webpack",
+    "test-node": "nodemon --ignore test/out test/node"
+  },
+  "dependencies": {
+    "deep-get-set": "^1.1.1",
+    "observable-slim": "^0.1.5",
+    "pug": "^3.0.2"
+  },
+  "types": "types/",
+  "devDependencies": {
+    "@types/node": "^16.7.6",
+    "@types/pug": "^2.0.5",
+    "js-beautify": "^1.14.0",
+    "tsc": "^2.0.3",
+    "typescript": "^4.4.2",
+    "webpack": "^5.51.1",
+    "webpack-cli": "^4.8.0"
+  }
+}

src/core/Compiler.ts

@@ -0,0 +1,92 @@
+import pug from "pug";
+import fs from "fs";
+import path from "path";
+import Renderer from "./Renderer";
+import Lexer from "./compiler/Lexer";
+import Parser from "./compiler/Parser";
+
+export namespace Compiler {
+    export interface Options {
+        /**
+         * If set to true, the function source will be included in the compiled template
+         * for better error messages. It is not enabled by default.
+         */
+        debug?: boolean,
+
+        /**
+         * Any configurations to be passed to pug
+         */
+        pug?: pug.Options
+    }
+}
+
+export default class PupperCompiler {
+    /**
+     * Compiles a single template file
+     * @param file The file to be compiled
+     * @returns
+     */
+    public compileSync(file: string, options: Compiler.Options = {}): Renderer {
+        return this.compile(fs.readFileSync(file, "utf8"), {
+            pug: {
+                basedir: path.dirname(file),
+                filename: file,
+            }
+        });
+    }
+
+    public compile(template: string, options: Compiler.Options = {}): Renderer {
+        const parser = new Parser();
+
+        try {
+            return new Renderer(
+                pug.compile(template, {
+                    name: "pupper",
+                    compileDebug: options.debug || false,
+                    // Always use self to prevent conflicts with other compilers
+                    self: true,
+                    // @ts-ignore
+                    plugins: [{
+                        lex: new Lexer(),
+                        preParse: parser.preParse.bind(this)
+                    }],
+                    ...options.pug || {}
+                })
+            );
+        } catch(e) {
+            throw (options.debug ? e : new Error("Failed to compile template:" + e.message));
+        }
+    }
+
+    /**
+     * Compiles to a string
+     * @param template The template to be compiled
+     * @param options 
+     * @returns 
+     */
+    public compileToString(template: string, options: Compiler.Options = {}): string {
+        const parser = new Parser();
+
+        try {
+            const rendered =  pug.compileClient(template, {
+                name: "pupper",
+                compileDebug: options.debug || false,
+                // Always use self to prevent conflicts with other compilers
+                self: true,
+                // @ts-ignore
+                plugins: [{
+                    lex: new Lexer(),
+                    preParse: parser.preParse.bind(this)
+                }],
+                ...options.pug || {}
+            });
+
+            return /*javascript*/`
+                ${rendered}
+                module.exports = pupper;
+            `;
+        } catch(e) {
+            throw (options.debug ? e : new Error("Failed to compile template:" + e.message));
+        }
+    }
+}

src/core/Renderer.ts

@@ -0,0 +1,320 @@
+import type pug from "pug";
+import deepGetSet from "deep-get-set";
+import observableSlim, { ObservableChange } from "observable-slim";
+
+export namespace Renderer {
+    export type ReactiveData = Record<string, any>;
+    export type ReactiveTarget = "text" | "html" | "attribute";
+    export type ReactiveCommand = "escape" | "literal";
+}
+
+export default class PupperRenderer {
+    private static SYNTAX_REGEX = /(?: +)?\@pupperjs\:(?<command>.+)\((?<property>(?:[\w+]|\.| )+?)\)(?: +)?/;
+
+    private template: pug.compileTemplate;
+    public data: ProxyHandler<Renderer.ReactiveData> = {};
+    private dom: HTMLDivElement;
+
+    /**
+     * A list of reactive properties with their respective elements
+     */
+    private reactive: Record<string, {
+        element: (HTMLElement | Element | Node),
+        target: Renderer.ReactiveTarget,
+        command: Renderer.ReactiveCommand,
+        key?: string
+    }[]> = {};
+
+    constructor(template: pug.compileTemplate, data?: Renderer.ReactiveData) {
+        this.template = template;
+
+        if (data) {
+            this.setData(data);
+        }
+    }
+
+    /**
+     * When a data property has changed
+     * @param changes The observed changes
+     */
+    onPropertyChange(changes: ObservableChange[]) {
+        changes.forEach((change) => {
+            // Check if has any handler registered for the given property
+            if (this.reactive[change.currentPath] !== undefined) {
+                // Trigger all of them
+                this.reactive[change.currentPath].forEach((reactive) => {
+                    console.log(reactive);
+
+                    switch(reactive.target) {
+                        // If it's targeting the text content
+                        case "text":
+                            reactive.element.textContent = change.newValue;
+                        break;
+
+                        // If it's targeting the HTML content
+                        case "html":
+                            (reactive.element as HTMLElement).innerHTML = change.newValue;
+                        break;
+
+                        // If it's targeting an attribute
+                        case "attribute":
+                            (reactive.element as HTMLElement).setAttribute(reactive.key, change.newValue);
+                        break;
+                    }
+                });
+            }
+        });
+    }
+
+    private addReactive(element: HTMLElement | Element | Node, property: string, command: Renderer.ReactiveCommand, target: Renderer.ReactiveTarget, attribute?: string) {
+        this.reactive[property] = this.reactive[property] || [];
+
+        this.reactive[property].push({
+            element,
+            target,
+            command,
+            key: attribute
+        });
+    }
+
+    /**
+     * Retrieves all pupper runtime helpers
+     * @returns 
+     */
+    private getHelpers() {
+        const self = this;
+
+        return {
+            deepGetSet,
+
+            /**
+             * Pupper helpers
+             */
+            pupper: class PupperHelper {
+                /**
+                 * Retrieves an escaped value to be displayed
+                 * @param key The path to the data to be escaped
+                 * @returns 
+                 */
+                static escape(key: string): string {
+                    const text = document.createTextNode(deepGetSet(self.getData(), key));
+                    return text.textContent;
+                }
+
+                /**
+                 * Retrieves a literal value to be displayed
+                 * @param key The path to the data to be escaped
+                 * @returns 
+                 */
+                static literal<T>(key: string): T {
+                    return deepGetSet(self.getData(), key);
+                }
+            }
+        };
+    }
+
+    /**
+     * Retrieves the underlying pug template function
+     * @returns 
+     */
+    getTemplateFn() {
+        return this.template;
+    }
+
+    /**
+     * Retrieves the template data
+     * @returns 
+     */
+    getData() {
+        return this.data;
+    }
+
+    /**
+     * Replaces all the object data
+     * @param data The new template data
+     */
+    setData(data: object) {
+        const proxy = {
+            get(target: Record<any, any>, key: string): any {
+                if (key == "isProxy") {
+                    return true;
+                }
+
+                const prop = target[key];
+
+                // return if property not found
+                if (typeof prop === "undefined") {
+                    return;
+                }
+
+                if (prop === null) {
+                    return null;
+                }
+
+                // Set value as proxy if object
+                if (!prop.isProxy && typeof prop === "object") {
+                    target[key] = new Proxy(prop, proxy);
+                }
+
+                return target[key];
+            },
+            set: this.onPropertyChange.bind(this)
+        };
+
+        this.data = observableSlim.create(data, true, this.onPropertyChange.bind(this));
+    }
+
+    /**
+     * Retrieves the template "locals" variable context
+     * @returns 
+     */
+    getTemplateContext() {
+        return {
+            ...this.getHelpers(),
+            ...this.getData()
+        };
+    }
+
+    /**
+     * Renders the template into a string
+     * @returns 
+     */
+    renderToString() {
+        return this.template(this.getTemplateContext());
+    }
+
+    /**
+     * Renders the template into a string
+     * @returns 
+     */
+    render() {
+        // Render the template
+        const rendered = this.renderToString();
+
+        // Convert into the final tag so we can parse it
+        this.dom = document.createElement("div");
+        this.dom.classList.add("pupper");
+        this.dom.innerHTML = rendered;
+
+        // Fix all children
+        this.prepareNodes(this.dom.childNodes);
+
+        return this.dom;
+    }
+
+    /**
+     * Parses a single @pupperjs syntax
+     * @param action The action / syntax to be parsed
+     * @returns 
+     */
+    private parseAction(action: string) {
+        // Parse it
+        const parsed = action.match(PupperRenderer.SYNTAX_REGEX);
+        
+        if (parsed === null) {
+            throw new Error("Failed to parse action \"" + action + "\"");
+        }
+
+        const command: Renderer.ReactiveCommand = (parsed.groups.command as Renderer.ReactiveCommand);
+        const property = parsed.groups.property;
+
+        let content = property;
+
+        switch(command) {
+            // If it's an escape call
+            case "escape":
+                content = this.getHelpers().pupper.escape(property);
+            break;
+
+            // If it's a literal call
+            case "literal":
+                content = this.getHelpers().pupper.literal(property);
+            break;
+        }
+
+        return {
+            content,
+            command,
+            property
+        };
+    }
+
+    /**
+     * Prepares nodes to be reactive
+     * @param nodes The node list to be prepared
+     */
+    private prepareNodes(nodes: NodeListOf<ChildNode>) {
+        // Iterate over all children nodes
+        Array.prototype.forEach.call(nodes, (element: HTMLElement) => {
+            // If has children, fix the children too
+            if (element.hasChildNodes()) {
+                this.prepareNodes(element.childNodes);
+            }
+
+            this.prepareNode(element);
+        });
+    }
+
+    /**
+     * Prepares a single HTML element
+     * @param element The element to be prepared
+     */
+    private prepareNode(element: HTMLElement | Element) {
+        // Check if it's a comment
+        if (element instanceof Comment) {
+            const comment = (element as Comment);
+            
+            // Check if it's not a pupper comment
+            if (comment.textContent.indexOf("@pupperjs:") === -1) {
+                return;
+            }
+
+            // Parse it
+            const parsed = this.parseAction(comment.textContent);
+            const text = document.createTextNode(parsed.content || "");
+
+            // Replace with a text node
+            element.replaceWith(text);
+
+            // Set it as reactive
+            this.addReactive(text, parsed.property, parsed.command, "text");
+        } else {
+            // Iterate over all the attributes
+            element.getAttributeNames().forEach((attr) => {
+                // Check if it doesn't start with our identifier
+                if (element.getAttribute(attr).indexOf("@pupperjs:") === -1) {
+                    return;
+                }
+
+                // Parse the attribute
+                const value = element.getAttribute(attr);
+
+                // Parse it
+                const parsed = this.parseAction(value);
+
+                if (!!parsed) {
+                    element.removeAttribute(attr);
+                }
+
+                // Replace it
+                element.setAttribute(attr, parsed.content);
+
+                // Set it as reactive
+                this.addReactive(element, parsed.property, parsed.command, "attribute", attr);
+            });
+        }
+    }    
+
+    /**
+     * Renders the template to an element
+     * @param element The element that will receive the children elements
+     * @returns 
+     */
+    renderTo(element: string | HTMLElement | Element = document.body) {
+        if (typeof element === "string") {
+            element = document.querySelector(element);
+        }
+
+        return element.append(this.render());
+    }
+}

src/core/compiler/Lexer.ts

@@ -0,0 +1,19 @@
+import type PugLexer from "pug-lexer";
+
+export default class Lexer {
+    /**
+     * The regex to test if an expression is a valid reactive item
+     */
+    public static REACTIVE_REGEX = /\{(?<tag>\{|-) ?(?<exp>(?:[\w+]|\.)+) ?(\}|-)\}/;
+
+    /**
+     * Checks if a given expression is valid
+     * @param lexer The pug lexer instance
+     * @param exp The expression to be checked against
+     * @returns 
+     */
+    public isExpression(lexer: PugLexer.Lexer, exp: string) {
+        const result = Lexer.REACTIVE_REGEX.test(exp);
+        return result;
+    }
+}

src/core/compiler/Parser.ts

@@ -0,0 +1,47 @@
+import Lexer from "./Lexer";
+
+export default class Parser {
+    /**
+     * Called before starts parsing
+     * @param lexer The pug lexer instance
+     * @param exp The expression to be checked against
+     * @returns 
+     */
+    public preParse(tokens: {
+        type: string,
+        loc: Record<string, any>,
+        val?: string,
+        name?: string,
+        mustEscape?: boolean
+    }[]) {
+        tokens = tokens.map((token, index) => {
+            // We want only attribute and code tokens
+            if (token.type !== "attribute" && token.type !== "code") {
+                return token;
+            }
+
+            // Check if it's a reactive item
+            if (token.mustEscape && Lexer.REACTIVE_REGEX.test(token.val)) {
+                // Extract the token value
+                const result = token.val.match(Lexer.REACTIVE_REGEX).groups;
+                const value = result.exp.replace(/\"/g, "\\\"");
+
+                const fn = result.tag === "{" ? "escape" : "literal";
+
+                if (token.type === "attribute") {
+                    // Replace with our escape
+                    token.val = `"@pupperjs:${fn}(${value})"`;
+                    token.mustEscape = false;
+                } else {
+                    // Replace it with a comment tag
+                    token.val = `"<!-- @pupperjs:${fn}(${value}) -->"`;
+                    token.mustEscape = false;
+                }
+            }
+
+            return token;
+        });
+
+        return tokens;
+    }
+}

src/global.d.ts

@@ -0,0 +1,29 @@
+declare module "deep-get-set" {
+    export default function(object: object, key: any, value?: any);
+}
+
+declare module "*.pupper" {
+    export default function(data: object): string;
+}
+
+declare module "observable-slim" {
+    declare type ObservableChange = {
+        type: "add" | "delete" | "update",
+        target: any[] | Record<any, any>,
+        property: string,
+        newValue: any,
+        currentPath: string,
+        jsonPointer: string,
+        proxy: Record<any, any>
+    };
+
+    /**
+     * 
+     * @param target Plain javascript object that we want to observe for changes
+     * @param domDelay If true, then observable slim will batch up observed changes to `target` on a 10ms delay (via setTimeout).
+     *                 If false, then `observer` will be immediately invoked after each individual change made to `target`. It is helpful to
+     *                 set `domDelay` to `true` when your `observer` function makes DOM manipulations.
+     * @param observer Will be invoked when a change is made to the proxy of `target`.
+     */
+    export function create(target: Record<any, any>, domDelay: boolean, observer: (changes: ObservableChange[]) => any | void);
+}

src/index.ts

@@ -0,0 +1,38 @@
+import { Compiler } from "./core/Compiler";
+import PupperCompiler from "./core/Compiler";
+import PupperRenderer from "./core/Renderer";
+
+class PupperStatic {
+    static readonly Compiler = PupperCompiler;
+    static readonly Renderer = PupperRenderer;
+    static readonly Pupper = import("./pupper");
+
+    /**
+     * Compiles a string
+     * @param file The string to be compiled
+     * @returns 
+     */
+    static compileSync(str: string, options?: Compiler.Options) {
+        return new PupperCompiler().compile(str, options);
+    }
+
+    /**
+     * Compiles a string
+     * @param file The string to be compiled
+     * @returns 
+     */
+    static compileToStringSync(str: string, options?: Compiler.Options) {
+        return new PupperCompiler().compileToString(str, options);
+    }
+
+    /**
+     * Compiles a single file
+     * @param file The file to be compiled
+     * @returns 
+     */
+    static compileFileSync(file: string, options?: Compiler.Options) {
+        return new PupperCompiler().compileSync(file, options);
+    }
+}
+
+export = PupperStatic;

src/pupper.ts

@@ -0,0 +1,7 @@
+import { Compiler } from "./core/Compiler";
+import { Renderer } from "./core/Renderer";
+
+export {
+    Compiler,
+    Renderer
+}

test/browser.js

@@ -0,0 +1,17 @@
+const { default: Renderer } = require("../out/core/Renderer");
+
+const template = new Renderer(require("./template.pupper"));
+
+window.data = {
+    item: {
+        title: "This is a title",
+        description: "This is a description",
+        thumbnail: "https://placedog.net/800"
+    }
+};
+
+template.setData(data);
+
+window.template = template;
+
+template.renderTo(document.getElementById("app"));

test/node.js

@@ -0,0 +1,9 @@
+const pupper = require("../");
+const fs = require("fs");
+const beautify = require("js-beautify");
+
+const result = beautify(
+    pupper.compileToStringSync(fs.readFileSync(__dirname + "/template.pupper"))
+);
+
+fs.writeFileSync(__dirname + "/out/node.js", result);

test/template.pupper

@@ -0,0 +1,8 @@
+.item.card.col-12.col-xl-6(data-id={{ item.id }})
+    img.card-img-top(src={- item.thumbnail -}, crossorigin="auto")
+
+    .card-header
+        .row.justify-content-between.align-items-center
+            .col-auto.d-flex.align-items-center
+                h5.mb-0.d-inline-block={{ item.title }}
+                p.description={- item.description -}

tsconfig.json

@@ -0,0 +1,19 @@
+{
+    "compilerOptions": {
+        "target": "es2015",
+        "allowJs": true,
+        "esModuleInterop": true,
+        "outDir": "out",
+        "sourceMap": true,
+        "declaration": true,
+        "declarationDir": "types",
+        "noImplicitAny": true,
+        "experimentalDecorators": true,
+        "emitDecoratorMetadata": true,
+        "moduleResolution": "node",
+        "module": "commonjs",
+        "skipLibCheck": true
+    },
+    "include": ["src/**/*.ts"],
+    "exclude": ["node_modules"],
+}

webpack.config.js

@@ -0,0 +1,17 @@
+module.exports = {
+    entry: __dirname + "/test/browser.js",
+    output: {
+        path: __dirname + "/test/out",
+        filename: "index.js"
+    },
+    watch: true,
+    module: {
+        rules: [
+            {
+                test: /\.pupper$/,
+                use: [__dirname + "/modules/webpack"]
+            }
+        ]
+    },
+    mode: "development"
+}