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81 lines
2.3 KiB
81 lines
2.3 KiB
// @flow
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// this only works correctly in modules, but we don't run on scripts anyway, so it's fine
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// the difference is that in modules template objects are being cached per call site
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export function getTypeScriptMakeTemplateObjectPath(path: *) {
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if (path.node.arguments.length === 0) {
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return null
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}
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const firstArgPath = path.get('arguments')[0]
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if (
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firstArgPath.isLogicalExpression() &&
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firstArgPath.get('left').isIdentifier() &&
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firstArgPath.get('right').isAssignmentExpression() &&
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firstArgPath.get('right.right').isCallExpression() &&
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firstArgPath.get('right.right.callee').isIdentifier() &&
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firstArgPath.node.right.right.callee.name.includes('makeTemplateObject') &&
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firstArgPath.node.right.right.arguments.length === 2
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) {
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return firstArgPath.get('right.right')
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}
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return null
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}
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// this is only used to prevent appending strings/expressions to arguments incorectly
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// we could push them to found array expressions, as we do it for TS-transpile output ¯\_(ツ)_/¯
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// it seems overly complicated though - mainly because we'd also have to check against existing stuff of a particular type (source maps & labels)
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// considering Babel double-transpilation as a valid use case seems rather far-fetched
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export function isTaggedTemplateTranspiledByBabel(path: *) {
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if (path.node.arguments.length === 0) {
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return false
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}
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const firstArgPath = path.get('arguments')[0]
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if (
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!firstArgPath.isCallExpression() ||
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!firstArgPath.get('callee').isIdentifier()
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) {
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return false
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}
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const calleeName = firstArgPath.node.callee.name
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if (!calleeName.includes('templateObject')) {
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return false
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}
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const bindingPath = path.scope.getBinding(calleeName).path
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if (!bindingPath.isFunction()) {
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return false
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}
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const functionBody = bindingPath.get('body.body')
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if (!functionBody[0].isVariableDeclaration()) {
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return false
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}
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const declarationInit = functionBody[0].get('declarations')[0].get('init')
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if (!declarationInit.isCallExpression()) {
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return false
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}
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const declarationInitArguments = declarationInit.get('arguments')
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if (
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declarationInitArguments.length === 0 ||
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declarationInitArguments.length > 2 ||
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declarationInitArguments.some(argPath => !argPath.isArrayExpression())
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) {
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return false
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}
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return true
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}
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