Width

width: 100 An integer representing the number of chars to break string.
If Width is omitted then width will default to a value of 80.

With the configuration below all inline BUILD_INCLUDE statments would have asJsString applied and each BUILD_INCLUE file would be split into lines that are 100 characters wide with extra line breaks removed using breakstring.

const bp = new BuildProcess();
const opt = {
  match: {
    kind: "buildIncludeSlash"
  },
  asJsString: true,
  breakstring: {
    width: 100,
    break: 'width',
    eol: 'noLnBr'
  }
  override: true
}
const results = bp.buildInclude('','./includes/replace.txt', opt);

breakstring
Build-include Options