Function getPossibleExtractions

test/fixtures/snapshot/typescript.js:160589–160630

* Given a piece of text to extract ('targetRange'), computes a list of possible extractions. * Each returned ExtractResultForScope corresponds to a possible target scope and is either a set of changes * or an error explaining why we can't extract into that scope.

(targetRange, context)

             * or an error explaining why we can't extract into that scope.
             */
            function getPossibleExtractions(targetRange, context) {
                var _a = getPossibleExtractionsWorker(targetRange, context), scopes = _a.scopes, _b = _a.readsAndWrites, functionErrorsPerScope = _b.functionErrorsPerScope, constantErrorsPerScope = _b.constantErrorsPerScope;
                // Need the inner type annotation to avoid https://github.com/Microsoft/TypeScript/issues/7547
                var extractions = scopes.map(function (scope, i) {
                    var functionDescriptionPart = getDescriptionForFunctionInScope(scope);
                    var constantDescriptionPart = getDescriptionForConstantInScope(scope);
                    var scopeDescription = ts.isFunctionLikeDeclaration(scope)
                        ? getDescriptionForFunctionLikeDeclaration(scope)
                        : ts.isClassLike(scope)
                            ? getDescriptionForClassLikeDeclaration(scope)
                            : getDescriptionForModuleLikeDeclaration(scope);
                    var functionDescription;
                    var constantDescription;
                    if (scopeDescription === 1 /* SpecialScope.Global */) {
                        functionDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_1_scope), [functionDescriptionPart, "global"]);
                        constantDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_1_scope), [constantDescriptionPart, "global"]);
                    }
                    else if (scopeDescription === 0 /* SpecialScope.Module */) {
                        functionDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_1_scope), [functionDescriptionPart, "module"]);
                        constantDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_1_scope), [constantDescriptionPart, "module"]);
                    }
                    else {
                        functionDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_1), [functionDescriptionPart, scopeDescription]);
                        constantDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_1), [constantDescriptionPart, scopeDescription]);
                    }
                    // Customize the phrasing for the innermost scope to increase clarity.
                    if (i === 0 && !ts.isClassLike(scope)) {
                        constantDescription = ts.formatStringFromArgs(ts.getLocaleSpecificMessage(ts.Diagnostics.Extract_to_0_in_enclosing_scope), [constantDescriptionPart]);
                    }
                    return {
                        functionExtraction: {
                            description: functionDescription,
                            errors: functionErrorsPerScope[i],
                        },
                        constantExtraction: {
                            description: constantDescription,
                            errors: constantErrorsPerScope[i],
                        },
                    };
                });
                return extractions;
            }
            function getPossibleExtractionsWorker(targetRange, context) {
                var sourceFile = context.file;
                var scopes = collectEnclosingScopes(targetRange);