guigrpa/docx-templates
Docx Templates
Docx-templates is a library designed for the programmatic generation of Word documents by merging dynamic data with predefined template files. It functions as a template engine that processes embedded instructions directly within the document structure to produce customized, data-driven output.
The engine distinguishes itself by allowing the execution of arbitrary JavaScript expressions and custom data resolvers during the generation process. This enables complex conditional logic, iterative loops, and the dynamic injection of diverse content types, including images, HTML fragments, and raw XML, directly into the document.
Beyond basic population, the tool provides utilities for inspecting template commands and extracting document metadata to facilitate validation and debugging. It also supports configurable error-aggregation strategies, allowing developers to collect multiple evaluation failures rather than halting execution immediately. The library is distributed as a TypeScript package and includes settings to adjust rendering parameters such as command delimiters and output compression.
Features
- Word Template Engines - Populates Word document templates with dynamic data by evaluating JavaScript snippets and query resolvers embedded directly within the structure.
- Document Generation Templates - Generates documents by injecting dynamic data, JavaScript expressions, and conditional logic into predefined template files.
- Inline Logic Execution - Executes custom JavaScript snippets during document generation to perform calculations, define variables, and fetch data via custom resolvers.
- Template Logic - Processes logic within templates to conditionally include content, loop over data collections, and define reusable variables.
- Embedded Instruction Parsers - Identifies and processes embedded instructions within document text to control flow and dynamic content insertion.
- Automated Report Generators - Creates professional business reports by injecting dynamic data and custom logic into pre-designed document templates.
- Dynamic Document Templating - Builds complex documents that adapt their structure and content based on runtime data, conditional logic, and embedded JavaScript expressions.
- Markup-Based Template Engines - Uses the underlying document structure as a template format to inject dynamic data directly into the raw markup.
- Content Fragment Embeddings - Embeds images, hyperlinks, HTML fragments, or raw XML into documents based on runtime data evaluation.
- Data-Driven Document Generation - Automates the production of personalized documents by merging structured data sources with reusable templates.
- Conditional Section Rendering - Includes or excludes specific sections of the document based on the evaluation of provided data or expressions.
- Runtime Content Injections - Supports the insertion of diverse data types like images, HTML fragments, and raw XML into the document structure at runtime.
- Template-Driven Workflows - Streamlines document creation processes by using programmable templates to handle repetitive formatting, data calculations, and conditional content inclusion.
- Data Generation Expression Evaluation - Executes arbitrary JavaScript expressions within the document context to perform data transformations and conditional logic.
- Dynamic Document Generators - Provides a tool for programmatically creating reports by evaluating custom logic and data resolvers directly within document structures.
- Command Inspection - Parses and lists embedded commands within templates to facilitate debugging and validation of document generation logic.
- Looping Content Blocks - Iterates over data collections to generate repeating content like table rows or list items within the document structure.
- Cumulative Error Collection - Collects multiple evaluation failures during generation instead of halting immediately to provide comprehensive debugging feedback.
- Custom Data Resolvers - Provides custom data-fetching functions that the engine invokes during the document generation process.
