@messageformat/icu-messageformat-1/lib/mf1-to-message.js

Compile ICU MessageFormat 1 sources into MessageFormat 2 formatters

import { parse } from '@messageformat/parser';
import { MessageFormat } from 'messageformat';
import { MF1Functions } from "./functions.js";
import { mf1ToMessageData } from "./mf1-to-message-data.js";
/**
 * Compile an ICU MessageFormat 1 message into a {@link MessageFormat} instance.
 *
 * ```js
 * import { mf1ToMessage } from '@messageformat/icu-messageformat-1';
 *
 * const msg = mf1ToMessage('en', 'The total is {V, number, ::currency/EUR}.');
 * msg.format({ V: 4.2 });
 * ```
 *
 * ```js
 * 'The total is €4.20.'
 * ```
 *
 * @param locales - The locale to use for the message.
 * @param source - An ICU MessageFormat message, either in its syntax representation,
 *   as an array of `@messageformat/parser` {@link https://messageformat.github.io/messageformat/api/parser.parse/ | AST tokens},
 *   or as a {@link MF.Message | Model.Message} data structure.
 * @param options - See {@link MF1Options} and {@link MessageFormatOptions}
 */
export function mf1ToMessage(locales, source, { strict, ...opt } = {}) {
    let msg;
    if (typeof source === 'string') {
        const ast = parse(source, { strict });
        msg = mf1ToMessageData(ast);
    }
    else if (Array.isArray(source)) {
        msg = mf1ToMessageData(source);
    }
    else {
        msg = source;
    }
    opt.functions = opt.functions
        ? Object.assign(Object.create(null), MF1Functions, opt.functions)
        : MF1Functions;
    return new MessageFormat(locales, msg, opt);
}