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Directive ↔ Statement to direct Compiler/Preprocessor behavior

"use strict"​

Directive Statement to invoke Strict Mode for either entire script or specific function

"use client"

Shebang

Hashbang​

Directive to specify Runtime via first-line code: #!/usr/bin/env node

By extension, //ts- && //eslint && //prettier statements act functionally as Directive to control plugin behavior (99% to disable for next line or file)

References​

  1. "use strict" ↔ Directive Statement to invoke Strict Mode for either entire script or specific function

  2. Hashbang ↔ Directive to specify Runtime via first-line code: #!/usr/bin/env node

  3. src/index.css ↔ base CSS fle to include Tailwind for project via @tailwind Directive

  4. At-Rule ↔ @ prefix Directive to control CSS behavior for next block/line

  5. TSC Directive ↔ comment statement as Directive to control TSC behavior on line/file basis

  6. "use client" ↔ (Next 13) Directive to opt-in to Client Component