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Fix legacy build

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The build process failed because webpack does not allow failed imports
when it is run as a module.
This detects modules with default exports and only generates import
statements for default exports where they are available.
This commit is contained in:
Maximilian Krög
2021-05-02 23:18:19 +02:00
parent 8ff40c40e8
commit 40f8e69675
12 changed files with 77 additions and 63 deletions
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52
tasks/generate-index.js
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@@ -22,15 +22,20 @@ async function getSymbols() {
*/
function getImport(symbol, member) {
const defaultExport = symbol.name.split('~');
const namedExport = symbol.name.split('.');
if (defaultExport.length > 1 && defaultExport[0].indexOf('.') === -1) {
const from = defaultExport[0].replace(/^module\:/, './') + '.js';
if (symbol.isDefaultExport) {
const from = defaultExport[0].replace(/^module\:/, './');
const importName = from.replace(/[.\/]+/g, '$');
return `import ${importName} from '${from}';`;
} else if (namedExport.length > 1 && member) {
const from = namedExport[0].replace(/^module\:/, './') + '.js';
return `import ${importName} from '${from}.js';`;
}
const namedExport = symbol.name.split('.');
if (
member &&
namedExport.length > 1 &&
(defaultExport.length <= 1 || defaultExport[0].indexOf('.') !== -1)
) {
const from = namedExport[0].replace(/^module\:/, './');
const importName = from.replace(/[.\/]+/g, '_');
return `import {${member} as ${importName}$${member}} from '${from}';`;
return `import {${member} as ${importName}$${member}} from '${from}.js';`;
}
}
@@ -44,24 +49,24 @@ function getImport(symbol, member) {
function formatSymbolExport(symbol, namespaces, imports) {
const name = symbol.name;
const parts = name.split('~');
const isNamed = parts[0].indexOf('.') !== -1;
const nsParts = parts[0].replace(/^module\:/, '').split(/[\/\.]/);
const last = nsParts.length - 1;
const importName = isNamed
? '_' + nsParts.slice(0, last).join('_') + '$' + nsParts[last]
: '$' + nsParts.join('$');
let line = nsParts[0];
for (let i = 1, ii = nsParts.length; i < ii; ++i) {
line += `.${nsParts[i]}`;
namespaces[line] =
(line in namespaces ? namespaces[line] : true) && i < ii - 1;
}
line += ` = ${importName} || {};`;
const imp = getImport(symbol, nsParts.pop());
const imp = getImport(symbol, nsParts[last]);
if (imp) {
const isNamed = parts[0].indexOf('.') !== -1;
const importName = isNamed
? '_' + nsParts.slice(0, last).join('_') + '$' + nsParts[last]
: '$' + nsParts.join('$');
let line = nsParts[0];
for (let i = 1, ii = nsParts.length; i < ii; ++i) {
line += `.${nsParts[i]}`;
namespaces[line] =
(line in namespaces ? namespaces[line] : true) && i < ii - 1;
}
line += ` = ${importName};`;
imports[imp] = true;
return line;
}
return line;
}
/**
@@ -71,7 +76,7 @@ function formatSymbolExport(symbol, namespaces, imports) {
*/
function generateExports(symbols) {
const namespaces = {};
const imports = [];
const imports = {};
const blocks = [];
symbols.forEach(function (symbol) {
const name = symbol.name;
@@ -80,7 +85,10 @@ function generateExports(symbols) {
if (imp) {
imports[imp] = true;
}
blocks.push(formatSymbolExport(symbol, namespaces, imports));
const line = formatSymbolExport(symbol, namespaces, imports);
if (line) {
blocks.push(line);
}
}
});
const nsdefs = [];