lib/rules/lines-around-directive.js
function checkDirectives(node) {
            const directives = astUtils.getDirectivePrologue(node);

            if (!directives.length) {
                return;
            }

            const firstDirective = directives[0];
            const leadingComments = sourceCode.getCommentsBefore(firstDirective);

            /*
             * Only check before the first directive if it is preceded by a comment or if it is at the top of
             * the file and expectLineBefore is set to "never". This is to not force a newline at the top of
             * the file if there are no comments as well as for compatibility with padded-blocks.
             */
            if (leadingComments.length) {
                if (expectLineBefore === "always" && !hasNewlineBefore(firstDirective)) {
                    reportError(firstDirective, "before", true);
                }

                if (expectLineBefore === "never" && hasNewlineBefore(firstDirective)) {
                    reportError(firstDirective, "before", false);
                }
            } else if (
                node.type === "Program" &&
                expectLineBefore === "never" &&
                !leadingComments.length &&
                hasNewlineBefore(firstDirective)
            ) {
                reportError(firstDirective, "before", false);
            }

            const lastDirective = directives[directives.length - 1];
            const statements = node.type === "Program" ? node.body : node.body.body;

            /*
             * Do not check after the last directive if the body only
             * contains a directive prologue and isn't followed by a comment to ensure
             * this rule behaves well with padded-blocks.
             */
            if (lastDirective === statements[statements.length - 1] && !lastDirective.trailingComments) {
                return;
            }

            if (expectLineAfter === "always" && !hasNewlineAfter(lastDirective)) {
                reportError(lastDirective, "after", true);
            }

            if (expectLineAfter === "never" && hasNewlineAfter(lastDirective)) {
                reportError(lastDirective, "after", false);
            }
        }
function checkDirectives(node) {
            const directives = astUtils.getDirectivePrologue(node);

            if (!directives.length) {
                return;
            }

            const firstDirective = directives[0];
            const leadingComments = sourceCode.getCommentsBefore(firstDirective);

            /*
             * Only check before the first directive if it is preceded by a comment or if it is at the top of
             * the file and expectLineBefore is set to "never". This is to not force a newline at the top of
             * the file if there are no comments as well as for compatibility with padded-blocks.
             */
            if (leadingComments.length) {
                if (expectLineBefore === "always" && !hasNewlineBefore(firstDirective)) {
                    reportError(firstDirective, "before", true);
                }

                if (expectLineBefore === "never" && hasNewlineBefore(firstDirective)) {
                    reportError(firstDirective, "before", false);
                }
            } else if (
                node.type === "Program" &&
                expectLineBefore === "never" &&
                !leadingComments.length &&
                hasNewlineBefore(firstDirective)
            ) {
                reportError(firstDirective, "before", false);
            }

            const lastDirective = directives[directives.length - 1];
            const statements = node.type === "Program" ? node.body : node.body.body;

            /*
             * Do not check after the last directive if the body only
             * contains a directive prologue and isn't followed by a comment to ensure
             * this rule behaves well with padded-blocks.
             */
            if (lastDirective === statements[statements.length - 1] && !lastDirective.trailingComments) {
                return;
            }

            if (expectLineAfter === "always" && !hasNewlineAfter(lastDirective)) {
                reportError(lastDirective, "after", true);
            }

            if (expectLineAfter === "never" && hasNewlineAfter(lastDirective)) {
                reportError(lastDirective, "after", false);
            }
        }
function checkDirectives ( node ) { const directives = astUtils . getDirectivePrologue ( node ) ; if ( ! directives . length ) { return ; } const firstDirective = directives [ 0 ] ; const leadingComments = sourceCode . getCommentsBefore ( firstDirective ) ; /*
             * Only check before the first directive if it is preceded by a comment or if it is at the top of
             * the file and expectLineBefore is set to "never". This is to not force a newline at the top of
             * the file if there are no comments as well as for compatibility with padded-blocks.
             */ if ( leadingComments . length ) { if ( expectLineBefore === "always" && ! hasNewlineBefore ( firstDirective ) ) { reportError ( firstDirective , "before" , true ) ; } if ( expectLineBefore === "never" && hasNewlineBefore ( firstDirective ) ) { reportError ( firstDirective , "before" , false ) ; } } else if ( node . type === "Program" && expectLineBefore === "never" && ! leadingComments . length && hasNewlineBefore ( firstDirective ) ) { reportError ( firstDirective , "before" , false ) ; } const lastDirective = directives [ directives . length - 1 ] ; const statements = node . type === "Program" ? node . body : node . body . body ; /*
             * Do not check after the last directive if the body only
             * contains a directive prologue and isn't followed by a comment to ensure
             * this rule behaves well with padded-blocks.
             */ if ( lastDirective === statements [ statements . length - 1 ] && ! lastDirective . trailingComments ) { return ; } if ( expectLineAfter === "always" && ! hasNewlineAfter ( lastDirective ) ) { reportError ( lastDirective , "after" , true ) ; } if ( expectLineAfter === "never" && hasNewlineAfter ( lastDirective ) ) { reportError ( lastDirective , "after" , false ) ; } }
Check lines around directives in node
@param {ASTNode} node - node to check
@returns {void}
Check lines around directives in node