svelte-preprocess/dist/modules/language.js

A Svelte preprocessor wrapper with baked in support for common used preprocessors

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getLanguage = exports.getLanguageFromAlias = exports.addLanguageAlias = exports.ALIAS_MAP = exports.SOURCE_MAP_PROP_MAP = void 0;
const path_1 = require("path");
exports.SOURCE_MAP_PROP_MAP = {
    babel: ['sourceMaps', true],
    typescript: ['sourceMap', true],
    scss: ['sourceMap', true],
    less: ['sourceMap', {}],
    stylus: ['sourcemap', true],
    postcss: ['map', true],
    coffeescript: ['sourceMap', true],
    globalStyle: ['sourceMap', true],
};
exports.ALIAS_MAP = new Map([
    ['pcss', 'css'],
    ['postcss', 'css'],
    ['sass', 'scss'],
    ['styl', 'stylus'],
    ['js', 'javascript'],
    ['coffee', 'coffeescript'],
    ['ts', 'typescript'],
]);
exports.addLanguageAlias = (entries) => entries.forEach((entry) => exports.ALIAS_MAP.set(...entry));
exports.getLanguageFromAlias = (alias) => {
    return exports.ALIAS_MAP.get(alias) || alias;
};
exports.getLanguage = (attributes) => {
    let alias = null;
    if (attributes.lang) {
        // istanbul ignore if
        if (typeof attributes.lang !== 'string') {
            throw new Error('lang attribute must be string');
        }
        alias = attributes.lang;
    }
    else if (attributes.type) {
        // istanbul ignore if
        if (typeof attributes.type !== 'string') {
            throw new Error('type attribute must be string');
        }
        alias = attributes.type.replace(/^(text|application)\/(.*)$/, '$2');
    }
    else if (attributes.src) {
        // istanbul ignore if
        if (typeof attributes.src !== 'string') {
            throw new Error('src attribute must be string');
        }
        const parts = path_1.basename(attributes.src).split('.');
        if (parts.length > 1) {
            alias = parts.pop();
        }
    }
    return {
        lang: exports.getLanguageFromAlias(alias),
        alias,
    };
};