fuse-box
Version:
Fuse-Box a bundler that does it right
88 lines (87 loc) • 4.29 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BundleFastConditionUnwrapper = void 0;
const computeBoolean_1 = require("../../static_compute/computeBoolean");
function BundleFastConditionUnwrapper() {
return {
commonVisitors: props => {
const transformationContext = props.transformationContext;
const compilerOptions = transformationContext.compilerOptions;
const env = compilerOptions.processEnv;
const isBrowser = compilerOptions.buildTarget === 'browser';
const isServer = compilerOptions.buildTarget === 'server';
return {
onEach: (schema) => {
const { node } = schema;
if (node.type === 'IfStatement') {
let operator = node.test.operator;
let rightValue;
let target;
if (node.test) {
if (node.test.type === 'MemberExpression') {
target = node.test;
}
const left = node.test.left;
const right = node.test.right;
if (right && right.type === 'Literal') {
rightValue = right.value;
}
if (left) {
if (left.type == 'MemberExpression')
target = left;
}
}
let replacement;
let result;
let shouldTranspile = false;
if (target) {
// process.env.*
if (target.object.type === 'MemberExpression' &&
target.object.object.name === 'process' &&
target.object.property.name === 'env') {
if (rightValue && operator) {
shouldTranspile = true;
result = computeBoolean_1.computeBoolean(env[target.property.name], operator, rightValue);
if (result)
replacement = node.consequent;
else
replacement = node.alternate;
}
}
if (target.object.name === 'FuseBox') {
if (target.property.name === 'isBrowser') {
shouldTranspile = true;
if (isBrowser)
replacement = node.consequent;
else
replacement = node.alternate;
}
if (target.property.name === 'isServer') {
shouldTranspile = true;
if (isServer)
replacement = node.consequent;
else
replacement = node.alternate;
}
}
}
if (shouldTranspile) {
if (replacement) {
if (replacement.body) {
return schema.replace(replacement.body);
}
else if (replacement.type === 'ExpressionStatement')
return schema.replace(replacement);
}
else {
return schema.remove();
}
}
}
return;
},
};
},
};
}
exports.BundleFastConditionUnwrapper = BundleFastConditionUnwrapper;