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messageformat-parser

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messageformat-parser

A PEG.js parser for ICU MessageFormat strings


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424K
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What is messageformat-parser?

The messageformat-parser npm package is a tool for parsing ICU MessageFormat strings. It is used to handle internationalization (i18n) by parsing messages that can include variables, plurals, and select statements. This package is particularly useful for applications that need to support multiple languages and complex message formatting.

What are messageformat-parser's main functionalities?

Parsing Simple Messages

This feature allows you to parse simple messages with placeholders. The `parse` function takes a message string and returns an abstract syntax tree (AST) representing the structure of the message.

const { parse } = require('messageformat-parser');
const message = 'Hello, {name}!';
const parsed = parse(message);
console.log(JSON.stringify(parsed, null, 2));

Handling Plurals

This feature allows you to parse messages that include pluralization. The `parse` function can handle ICU MessageFormat plural syntax, making it easier to manage messages that need to change based on quantity.

const { parse } = require('messageformat-parser');
const message = '{count, plural, one {# item} other {# items}}';
const parsed = parse(message);
console.log(JSON.stringify(parsed, null, 2));

Handling Select Statements

This feature allows you to parse messages that include select statements. The `parse` function can handle ICU MessageFormat select syntax, which is useful for gender-specific or other conditional messages.

const { parse } = require('messageformat-parser');
const message = '{gender, select, male {He} female {She} other {They}} will respond soon.';
const parsed = parse(message);
console.log(JSON.stringify(parsed, null, 2));

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Package last updated on 12 Apr 2020

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