Escaping word character selector in Gatsby GraphQL regex filter










0















I am currently using Gatsby to build a documentation site for a component library that I have developed. I have installed the Transformer-Remark plugin which creates javascript objects for each markdown file within my site's structure.



As the site is for documentation, I have a Component detail page which outlines how a component can be used by a consumer and the majority of the content of this page is derived from the README.MD of the corresponding package on NPM.



On the left hand side of this page is a dynamic menu which lists the components I have created. The menu makes use of a GraphQL query within a custom Gatsby template to split the components into 3 categories based on a RegEx filter of their fileAbsolutePath like so:






export const pageQuery = graphql`
query($path: String!)
pageData:
markdownRemark(fields: slug: eq: $path )
html
fields
slug
title

fileAbsolutePath



atoms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-atoms-(w+)/README/")
edges
node
fields
slug
title





molecules:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-molecules-(w+)/README/")
edges
node
fields
slug
title




organisms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-organisms-(w+)/README/")
edges
node
fields
slug
title





`;





However when I try to run Gatsby Develop I get the following error:



Syntax Error: Invalid character escape sequence: w.



I have tried adding a second backslash before the string in question to escape it but this doesn't work.



Is there a special way of escaping certain characters in RegEx filters in GraphQL?



Edit:



I should add that the same RegEx works fine on this RegEx testing site:
https://regexr.com/436ep










share|improve this question
























  • It should be regex: /dl-atoms-(w+)/README/, without double quotes. The backslash must be escaped since it is a regex delimiter char.

    – Wiktor Stribiżew
    Nov 15 '18 at 14:28












  • That leads to a different error: Syntax Error: Cannot parse the unexpected character "/". Do I then need to go through and escape the opening forward slash, etc. I'm pretty sure I copied the syntax from the Gatsby or GraphQL documentation so I was under the impression the quotes are required ?!

    – James Howell
    Nov 15 '18 at 14:31











  • Well, it is strange as it seems "/dl-molecules-(\w+)/README/" should work. Maybe the README must match the whole string, try "/dl-molecules-(\w+)/.*README.*/"

    – Wiktor Stribiżew
    Nov 15 '18 at 14:40












  • Same error: Syntax Error: Invalid character escape sequence: w graphql/template-strings

    – James Howell
    Nov 15 '18 at 14:47















0















I am currently using Gatsby to build a documentation site for a component library that I have developed. I have installed the Transformer-Remark plugin which creates javascript objects for each markdown file within my site's structure.



As the site is for documentation, I have a Component detail page which outlines how a component can be used by a consumer and the majority of the content of this page is derived from the README.MD of the corresponding package on NPM.



On the left hand side of this page is a dynamic menu which lists the components I have created. The menu makes use of a GraphQL query within a custom Gatsby template to split the components into 3 categories based on a RegEx filter of their fileAbsolutePath like so:






export const pageQuery = graphql`
query($path: String!)
pageData:
markdownRemark(fields: slug: eq: $path )
html
fields
slug
title

fileAbsolutePath



atoms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-atoms-(w+)/README/")
edges
node
fields
slug
title





molecules:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-molecules-(w+)/README/")
edges
node
fields
slug
title




organisms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-organisms-(w+)/README/")
edges
node
fields
slug
title





`;





However when I try to run Gatsby Develop I get the following error:



Syntax Error: Invalid character escape sequence: w.



I have tried adding a second backslash before the string in question to escape it but this doesn't work.



Is there a special way of escaping certain characters in RegEx filters in GraphQL?



Edit:



I should add that the same RegEx works fine on this RegEx testing site:
https://regexr.com/436ep










share|improve this question
























  • It should be regex: /dl-atoms-(w+)/README/, without double quotes. The backslash must be escaped since it is a regex delimiter char.

    – Wiktor Stribiżew
    Nov 15 '18 at 14:28












  • That leads to a different error: Syntax Error: Cannot parse the unexpected character "/". Do I then need to go through and escape the opening forward slash, etc. I'm pretty sure I copied the syntax from the Gatsby or GraphQL documentation so I was under the impression the quotes are required ?!

    – James Howell
    Nov 15 '18 at 14:31











  • Well, it is strange as it seems "/dl-molecules-(\w+)/README/" should work. Maybe the README must match the whole string, try "/dl-molecules-(\w+)/.*README.*/"

    – Wiktor Stribiżew
    Nov 15 '18 at 14:40












  • Same error: Syntax Error: Invalid character escape sequence: w graphql/template-strings

    – James Howell
    Nov 15 '18 at 14:47













0












0








0








I am currently using Gatsby to build a documentation site for a component library that I have developed. I have installed the Transformer-Remark plugin which creates javascript objects for each markdown file within my site's structure.



As the site is for documentation, I have a Component detail page which outlines how a component can be used by a consumer and the majority of the content of this page is derived from the README.MD of the corresponding package on NPM.



On the left hand side of this page is a dynamic menu which lists the components I have created. The menu makes use of a GraphQL query within a custom Gatsby template to split the components into 3 categories based on a RegEx filter of their fileAbsolutePath like so:






export const pageQuery = graphql`
query($path: String!)
pageData:
markdownRemark(fields: slug: eq: $path )
html
fields
slug
title

fileAbsolutePath



atoms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-atoms-(w+)/README/")
edges
node
fields
slug
title





molecules:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-molecules-(w+)/README/")
edges
node
fields
slug
title




organisms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-organisms-(w+)/README/")
edges
node
fields
slug
title





`;





However when I try to run Gatsby Develop I get the following error:



Syntax Error: Invalid character escape sequence: w.



I have tried adding a second backslash before the string in question to escape it but this doesn't work.



Is there a special way of escaping certain characters in RegEx filters in GraphQL?



Edit:



I should add that the same RegEx works fine on this RegEx testing site:
https://regexr.com/436ep










share|improve this question
















I am currently using Gatsby to build a documentation site for a component library that I have developed. I have installed the Transformer-Remark plugin which creates javascript objects for each markdown file within my site's structure.



As the site is for documentation, I have a Component detail page which outlines how a component can be used by a consumer and the majority of the content of this page is derived from the README.MD of the corresponding package on NPM.



On the left hand side of this page is a dynamic menu which lists the components I have created. The menu makes use of a GraphQL query within a custom Gatsby template to split the components into 3 categories based on a RegEx filter of their fileAbsolutePath like so:






export const pageQuery = graphql`
query($path: String!)
pageData:
markdownRemark(fields: slug: eq: $path )
html
fields
slug
title

fileAbsolutePath



atoms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-atoms-(w+)/README/")
edges
node
fields
slug
title





molecules:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-molecules-(w+)/README/")
edges
node
fields
slug
title




organisms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-organisms-(w+)/README/")
edges
node
fields
slug
title





`;





However when I try to run Gatsby Develop I get the following error:



Syntax Error: Invalid character escape sequence: w.



I have tried adding a second backslash before the string in question to escape it but this doesn't work.



Is there a special way of escaping certain characters in RegEx filters in GraphQL?



Edit:



I should add that the same RegEx works fine on this RegEx testing site:
https://regexr.com/436ep






export const pageQuery = graphql`
query($path: String!)
pageData:
markdownRemark(fields: slug: eq: $path )
html
fields
slug
title

fileAbsolutePath



atoms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-atoms-(w+)/README/")
edges
node
fields
slug
title





molecules:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-molecules-(w+)/README/")
edges
node
fields
slug
title




organisms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-organisms-(w+)/README/")
edges
node
fields
slug
title





`;





export const pageQuery = graphql`
query($path: String!)
pageData:
markdownRemark(fields: slug: eq: $path )
html
fields
slug
title

fileAbsolutePath



atoms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-atoms-(w+)/README/")
edges
node
fields
slug
title





molecules:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-molecules-(w+)/README/")
edges
node
fields
slug
title




organisms:
allMarkdownRemark(sort: order: ASC, fields: [fields___title], limit: 1000, filter: fileAbsolutePath: regex: "/dl-organisms-(w+)/README/")
edges
node
fields
slug
title





`;






regex graphql graphql-js gatsby






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 15 '18 at 14:32







James Howell

















asked Nov 15 '18 at 14:27









James HowellJames Howell

38221125




38221125












  • It should be regex: /dl-atoms-(w+)/README/, without double quotes. The backslash must be escaped since it is a regex delimiter char.

    – Wiktor Stribiżew
    Nov 15 '18 at 14:28












  • That leads to a different error: Syntax Error: Cannot parse the unexpected character "/". Do I then need to go through and escape the opening forward slash, etc. I'm pretty sure I copied the syntax from the Gatsby or GraphQL documentation so I was under the impression the quotes are required ?!

    – James Howell
    Nov 15 '18 at 14:31











  • Well, it is strange as it seems "/dl-molecules-(\w+)/README/" should work. Maybe the README must match the whole string, try "/dl-molecules-(\w+)/.*README.*/"

    – Wiktor Stribiżew
    Nov 15 '18 at 14:40












  • Same error: Syntax Error: Invalid character escape sequence: w graphql/template-strings

    – James Howell
    Nov 15 '18 at 14:47

















  • It should be regex: /dl-atoms-(w+)/README/, without double quotes. The backslash must be escaped since it is a regex delimiter char.

    – Wiktor Stribiżew
    Nov 15 '18 at 14:28












  • That leads to a different error: Syntax Error: Cannot parse the unexpected character "/". Do I then need to go through and escape the opening forward slash, etc. I'm pretty sure I copied the syntax from the Gatsby or GraphQL documentation so I was under the impression the quotes are required ?!

    – James Howell
    Nov 15 '18 at 14:31











  • Well, it is strange as it seems "/dl-molecules-(\w+)/README/" should work. Maybe the README must match the whole string, try "/dl-molecules-(\w+)/.*README.*/"

    – Wiktor Stribiżew
    Nov 15 '18 at 14:40












  • Same error: Syntax Error: Invalid character escape sequence: w graphql/template-strings

    – James Howell
    Nov 15 '18 at 14:47
















It should be regex: /dl-atoms-(w+)/README/, without double quotes. The backslash must be escaped since it is a regex delimiter char.

– Wiktor Stribiżew
Nov 15 '18 at 14:28






It should be regex: /dl-atoms-(w+)/README/, without double quotes. The backslash must be escaped since it is a regex delimiter char.

– Wiktor Stribiżew
Nov 15 '18 at 14:28














That leads to a different error: Syntax Error: Cannot parse the unexpected character "/". Do I then need to go through and escape the opening forward slash, etc. I'm pretty sure I copied the syntax from the Gatsby or GraphQL documentation so I was under the impression the quotes are required ?!

– James Howell
Nov 15 '18 at 14:31





That leads to a different error: Syntax Error: Cannot parse the unexpected character "/". Do I then need to go through and escape the opening forward slash, etc. I'm pretty sure I copied the syntax from the Gatsby or GraphQL documentation so I was under the impression the quotes are required ?!

– James Howell
Nov 15 '18 at 14:31













Well, it is strange as it seems "/dl-molecules-(\w+)/README/" should work. Maybe the README must match the whole string, try "/dl-molecules-(\w+)/.*README.*/"

– Wiktor Stribiżew
Nov 15 '18 at 14:40






Well, it is strange as it seems "/dl-molecules-(\w+)/README/" should work. Maybe the README must match the whole string, try "/dl-molecules-(\w+)/.*README.*/"

– Wiktor Stribiżew
Nov 15 '18 at 14:40














Same error: Syntax Error: Invalid character escape sequence: w graphql/template-strings

– James Howell
Nov 15 '18 at 14:47





Same error: Syntax Error: Invalid character escape sequence: w graphql/template-strings

– James Howell
Nov 15 '18 at 14:47












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