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rollup.config.js
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rollup.config.js
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'use strict';
const path = require('path');
const babel = require('rollup-plugin-babel');
const svelte = require('rollup-plugin-svelte');
const babelCore = require('@babel/core');
const resolve = require('rollup-plugin-node-resolve');
const commonjs = require('rollup-plugin-commonjs');
module.exports = {
input: 'index.js',
output: [
{
file: 'index.cjs.js',
format: 'cjs',
sourcemap: true
},
{
file: 'index.esm.js',
format: 'esm',
sourcemap: true
}
],
plugins: [
svelte({
legacy: true
}),
{
async transform(code, id) {
if (!id.includes('lib/index.svelte')) {
return;
}
const result = await babelCore.transformAsync(code, {
sourceMaps: true,
plugins: [useMountedNodePlugin()]
});
return {
code: result.code,
map: result.map
};
}
},
babel({
exclude: 'node_modules/**',
extensions: ['.js', '.svelte']
}),
babel({
include: 'node_modules/svelte/shared.js',
runtimeHelpers: true,
babelrc: false,
configFile: path.resolve(__dirname, '.babelrc')
}),
resolve(),
commonjs()
],
external: ['manage-side-effects']
};
function useMountedNodePlugin() {
return babelCore.createConfigItem(({ types: t }) => {
return {
visitor: {
Identifier(path, state) {
if (
path.node.name === 'createElement' &&
path.findParent(
(path) =>
path.isCallExpression() &&
path.get('arguments')[0].isStringLiteral() &&
path.get('arguments')[0].get('value').node ===
'input'
) &&
path.findParent(
(path) =>
path.isFunctionDeclaration() &&
path.get('id.name').node ===
'create_main_fragment'
)
) {
path.parentPath.replaceWith(
t.memberExpression(
t.memberExpression(
t.identifier('component'),
t.identifier('options')
),
t.identifier('elementToHandle')
)
);
}
if (
path.node.name === 'd' &&
path.parentPath.isObjectMethod() &&
path.findParent(
(path) =>
path.isFunctionDeclaration() &&
path.get('id.name').node ===
'create_main_fragment'
)
) {
path.parentPath
.get('body')
.unshiftContainer('body', [
t.expressionStatement(
t.callExpression(
t.memberExpression(
t.memberExpression(
t.memberExpression(
t.identifier('component'),
t.identifier('options')
),
t.identifier('target')
),
t.identifier('appendChild')
),
[t.identifier('input')]
)
)
]);
}
}
}
};
});
}