Function getDefaultProps

dash/extract-meta.js:419–456

(symbol, source)

    };

    const getDefaultProps = (symbol, source) => {
        const statements = source.statements.filter(
            stmt =>
                (!!stmt.name &&
                    checker.getSymbolAtLocation(stmt.name) === symbol) ||
                ts.isExpressionStatement(stmt) ||
                ts.isVariableStatement(stmt)
        );
        return statements.reduce((acc, statement) => {
            let propMap = {};

            statement.getChildren().forEach(child => {
                let {right} = child;
                if (right && ts.isIdentifier(right)) {
                    const value = source.locals.get(right.escapedText);
                    if (
                        value &&
                        value.valueDeclaration &&
                        ts.isVariableDeclaration(value.valueDeclaration) &&
                        value.valueDeclaration.initializer
                    ) {
                        right = value.valueDeclaration.initializer;
                    }
                }
                if (right) {
                    const {properties} = right;
                    if (properties) {
                        propMap = getDefaultPropsValues(properties);
                    }
                }
            });

            return {
                ...acc,
                ...propMap
            };
        }, {});
    };

    const getPropComment = symbol => {
        // Doesn't work too good with the JsDocTags losing indentation.